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All Textbook Solutions for PREALGEBRA

In the following exercises, identify all sets of like terms. 6z, 3w2, 1, 6z2, 4z, w2 In the following exercises, identify all sets of like terms. 9a, a2, 16ab, 16b2, 4ab, 9b2 In the following exercises, identify all sets of like terms. 3, 25r2, 10s, 10r, 4r2, 3s In the following exercises, simplify the given expression by combining like terms. 10x+3x In the following exercises, simplify the given expression by combining like terms. 15x+4x In the following exercises, simplify the given expression by combining like terms. 17a+9a In the following exercises, simplify the given expression by combining like terms. 18z+9z In the following exercises, simplify the given expression by combining like terms. 4c+2c+c In the following exercises, simplify the given expression by combining like terms. 6y+4y+y In the following exercises, simplify the given expression by combining like terms. 9x+3x+8 In the following exercises, simplify the given expression by combining like terms. 8a+5a+9 In the following exercises, simplify the given expression by combining like terms. 7u+2+3u+1 In the following exercises, simplify the given expression by combining like terms. 8d+6+2d+5 In the following exercises, simplify the given expression by combining like terms. 7p+6+5p+4 In the following exercises, simplify the given expression by combining like terms. 8x+7+4x5 In the following exercises, simplify the given expression by combining like terms. 10a+7+5a2+7a4 In the following exercises, simplify the given expression by combining like terms. 7c+4+6c3+9c1 In the following exercises, simplify the given expression by combining like terms. 3x2+12x+11+14x2+8x+5 In the following exercises, simplify the given expression by combining like terms. 5b2+9b+10+2b2+3b4 In the following exercises, translate the given word phrase into an algebraic expression. The sum of 8 and 12 In the following exercises, translate the given word phrase into an algebraic expression. The sum of 9 and 1 In the following exercises, translate the given word phrase into an algebraic expression. The difference of 14 and 9 In the following exercises, translate the given word phrase into an algebraic expression. 8 less than 19 In the following exercises, translate the given word phrase into an algebraic expression. The product of 9 and 7 In the following exercises, translate the given word phrase into an algebraic expression. The product of 8 and 7 In the following exercises, translate the given word phrase into an algebraic expression. The qoutiendt of 36 and 9 In the following exercises, translate the given word phrase into an algebraic expression. The quotient of 42 and 7 In the following exercises, translate the given word phrase into an algebraic expression. The difference of xand 4 In the following exercises, translate the given word phrase into an algebraic expression. 3 less than x In the following exercises, translate the given word phrase into an algebraic expression. The product of 6 and y In the following exercises, translate the given word phrase into an algebraic expression. The product of 9 and y In the following exercises, translate the given word phrase into an algebraic expression. The sum of 8xand 3x In the following exercises, translate the given word phrase into an algebraic expression. The sum of 13xand 3x In the following exercises, translate the given word phrase into an algebraic expression. The quotient of yand 3 In the following exercises, translate the given word phrase into an algebraic expression. The quotient of yand 8 In the following exercises, translate the given word phrase into an algebraic expression. Eight times the difference of yand nine In the following exercises, translate the given word phrase into an algebraic expression. Seven times the difference of yand one In the following exercises, translate the given word phrase into an algebraic expression. Five times the sum of xand y In the following exercises, translate the given word phrase into an algebraic expression. Nine times five less than twice x In the following exercises, translate, write an algebraic expression. Adele bought a skirt and a blouse. The cost 15more than the blouse. Let brepresent the cost of the blouse. Write an expression for the cost of the skirt.In the following exercises, write an algebraic expression. Eric has rock and classical CDs in his car. The number of rock CDs is 3more than the number of classical CDs. Let crepresent the number of classical CDs. Write an expression for the number of rock CDs.In the following exercises, write an algebraic expression. The number of girls in a second-grade class is 4less than the number of boys. Let b represent the number of boys. Write an expression for the number of girls.In the following exercises, write an algebraic expression. Marcella has 6fewer male cousins than female cousins. Let frepresent the number of female cousins. Write an expression for the number of boy cousins.In the following exercises, write an algebraic expression. Greg has nickels and pennies in his pocket. The number of pennies is seven less than twice the number of nickels. Let nrepresent the number of nickels. Write an expression for the number of pennies.In the following exercises, write an algebraic expression. Jeannette has $5 and $10 bills in her wallet. The number of fives is three more than six times the number of tens. Let trepresent the number of tens. Write an expression for the number of fives.In the following exercises, write an algebraic expression to solve the problem 143. Car insurance Justin’s car insurance has a $750 deductible per incident. This means that he pays $750 and his insurance company will pay all costs beyond $750. If Justin files a claim for $2,100. how much will he pay, and how much will his insurance company pay?In the following exercises, write an algebraic expression to solve the problem 144. Home insurance Pam and Armando’s home insurance has a $2,500 deductible per incident. This means that they pay $2,500 and their insurance company will pay all costs beyond $2,500. If Pam and Armando file a claim for $19.400. how much will they pay, and how much will their insurance company pay?Explain why “the sum of xand y” is the same as “the sum of yand x,” but “the difference of xand y” is not the same as “the difference of yand x.” Try substituting two random numbers for x and yto help you explain.Explain the difference between “4 times the sum of xand y” and “the sum of 4 times xand y.”TRY IT:: 2.55 Isx= 3 a solution of 4x7=16?TRYIT::2.56 Isx=2a solution of 6x2=10?TRY IT:: 257 Is y = 3 a solution of 9y2=8y+1 ?TRY IT:: 2.58 Is y = 4 a solution of 5y3=3y+5 ?TRY IT 2.59 Write the equation modeled by the envelopes and counters, and then solve the equation:RY IT:: 2.60 Write the equation modeled by the envelopes and counters, and then solve the equation:TRY fl :: 2.61 Solve: x+6=19 TRY IT :: 2.62 Solve: x+9=14 TRY IT :: 2.63 Solve: 95=y+67 TRY IT :: 2.64 Solve: 91=y+45 TRY IT :: 2.65 Solve: x9=13 TRY IT :: 2.66 Solve: y1=3 TRY IT :: 2.67 Solve: 19=a18 TRY IT :: 2.68 Solve: 27=n14 TRY IT :: 2.69 Translate the sentence into an algebraic equation: The sum of 7 and 6 gives 13.TRY IT :: 2.70 Translate the sentence into an algebraic equation: The sum of 8 and 6 is 14.TRY IT :: 2.71 Translate the sentence into an algebraic equation: The product of 6 and 9 is 54.TRY IT :: 2.72 Translate the sentence into an algebraic equation: The product of 21 and 3 gives 63.TRY IT :: 2.73 Translate the given sentence into an algebraic equation: Twice the difference of xand 5 gives 30.TRY IT :: 2.74 Translate the given sentence into an algebraic equation: Twice the difference of yand 4 gives 16.TRY IT :: 2.75 Translate and solve: Seven more than xis equal to 37.TRY IT :: 2.76 Translate and salve: Eleven more than yis equal to 28.TRY IT :: 2.77 Translate and solve: The difference of zand 17 is equal to 37.TRY IT :: 2.78 Translate and solve: The difference of xand 19 is equal to 45.In the following exercises, determine whether each given value is a solution to the equation. x+13=21 (a) x=8(b) x=34 âIn the following exercises, determine whether each given value is a solution to the equation. y+18=28 (a) y=7(b) y=43 In the following exercises, determine whether each given value is a solution to the equation. m4=13 (a) m=9(b) m=17 In the following exercises, determine whether each given value is a solution to the equation. n9=6 (a) n=3(b) n=15 In the following exercises, determine whether each given value is a solution to the equation. 3p+6=15 (a) p=3(b) p=7 In the following exercises, determine whether each given value is a solution to the equation 8q+4=20 (a) q=2(b) q=3 In the following exercises, determine whether each given value is a solution to the equation 18d9=27 (a) d=1(b) d=2 In the following exercises, determine whether each given value is a solution to the equation 24f12=60 (a) f=2(b) f=3 In the following exercises, determine whether each given value is a solution to the equation 8u4=4u+40 (a) u=3(b) u=11 In the following exercises, determine whether each given value is a solution to the equation 7v3=4v+36 (a) v=3(b) v=11 In the following exercises, determine whether each given value is a solution to the equation 20h5=15h+35 (a) h=6(b) h=8 In the following exercises, determine whether each given value is a solution to the equation 18k3=12k+33 (a) k=1(b) k=6 In the following exercises. Write the equation modeled by the envelopes and counters and then solve using the subtraction property of equality In the following exercises. Write the equation modeled by the envelopes and counters and then solve using the subtraction property of equality In the following exercises. Write the equation modeled by the envelopes and counters and then solve using the subtraction property of equality In the following exercises. Write the equation modeled by the envelopes and counters and then solve using the subtraction property of equality In the following exercises, solve each equation using the subtraction property of equality. a+2=18 In the following exercises, solve each equation using the subtraction property of equality. b+5=13 In the following exercises, solve each equation using the subtraction property of equality. p+18=23 In the following exercises, solve each equation using the subtraction property of equality. q+14=31 In the following exercises, solve each equation using the subtraction property of equality. r+76=100 In the following exercises, solve each equation using the subtraction property of equality. s+62=95 In the following exercises, solve each equation using the subtraction property of equality. 16=x+9 In the following exercises, solve each equation using the subtraction property of equality. 17=y+6 In the following exercises, solve each equation using the subtraction property of equality. 93=p+24 In the following exercises, solve each equation using the subtraction property of equality. 116=q+79 In the following exercises, solve each equation using the subtraction property of equality. 465=d+398 In the following exercises, solve each equation using the subtraction property of equality. 932=c+641 In the following exercises, solve each equation using the subtraction property of equality. y3=19 In the following exercises, solve each equation using the addition property of equality. x4=12 In the following exercises, solve each equation using the addition property of equality. u6=24 In the following exercises, solve each equation using the addition property of equality. v7=35 In the following exercises, solve each equation using the addition property of equality. f55=123 In the following exercises, solve each equation using the addition property of equality. g39=117 In the following exercises, solve each equation using the addition property of equality. 19=n13 In the following exercises, solve each equation using the addition property of equality. 18=m15 In the following exercises, solve each equation using the addition property of equality. 10=p38 In the following exercises, solve each equation using the addition property of equality. 18=q72 In the following exercises, solve each equation using the addition property of equality. 268=y199 In the following exercises, solve each equation using the addition property of equality. 204=z149 In the following exercises, solve each equation using the addition property of equality. The sum of 8 and 9 is equal to 17.In the following exercises, translate the given sentence into an algebraic equation. The sum of 7 and is equal to 16.In the following exercises, translate the given sentence into an algebraic equation. The difference of 23 and 19 is equal to 4.In the following exercises, translate the given sentence into an algebraic equation. The difference of 29 and 12 is equal to 17.In the following exercises, translate the given sentence into an algebraic equation. The product of 3 and 9 is equal to 27.In the following exercises, translate the given sentence into an algebraic equation. The product of 6 and 8 is equal to 48.In the following exercises, translate the given sentence into an algebraic equation. The quotient of 54 and 6 is equal to 9.In the following exercises, translate the given sentence into an algebraic equation. The quotient of 42 and 7 is equal to 6.In the following exercises, translate the given sentence into an algebraic equation. Twice the difference of nand 10 gives 52.In the following exercises, translate the given sentence into an algebraic equation. Twice the difference of mand 14 gives 64.In the following exercises, translate the given sentence into an algebraic equation. The sum of three times yand 10 is 100.In the following exercises, translate the given sentence into an algebraic equation. The sum of eight times xand 4 is 68.In the following exercises, translate the given sentence into an algebraic equation and then solve it Five more than pis equal to 21.In the following exercises, translate the given sentence into an algebraic equation and then solve it Nine more than qis equal to 40.In the following exercises, translate the given sentence into an algebraic equation and then solve it The sum of rand 18 is 73.In the following exercises, translate the given sentence into an algebraic equation and then solve it The sum of sand 13 is 68.In the following exercises, translate the given sentence into an algebraic equation and then solve it The difference of dand 30 is equal to 52.In the following exercises, translate the given sentence into an algebraic equation and then solve it The difference of cand 25 is equal to 75.In the following exercises, translate the given sentence into an algebraic equation and then solve it less than uis 89.In the following exercises, translate the given sentence into an algebraic equation and then solve it less than w is 56.In the following exercises, translate the given sentence into an algebraic equation and then solve it less than cgives 799.In the following exercises, translate the given sentence into an algebraic equation and then solve it less than dgives 850.Insurance Vince’s car insurance has a $500 deductible. Find the amount the insurance company will pay, p,for an $1800 claim by solving the equation 500 + p= 1800.Insurance Marta’s homeowner’s insurance policy has a $750 deductible. The insurance company paid $5800 to repair damages caused by a storm. Find the total cost of the storm damage, d,by solving the equation d—750 = 5800.Sale purchase Arthur bought a suit that was on sale for $120 off. He paid $340 for the suit. Find the Original price, p,of the suit by solving the equation p120=340.Sale purchase Rita bought a sofa that was on sale for $1299. She paid a total of $1409, including sales tax. Find the amount of the sales tax, t,by solving the equation 1299+t=1400.Is x=1a solution to the equation 8x2=166x?How do you know?Write the equation y5=21in words. Then make up a word problem for this equation.TRY IT :: 2.79 Determine whether each number is a multiple of 2: 678 21,493 TRY IT :: 280 Determine whether each number is a multiple of 2: 979 17,780 TRY lT :: 2.81 Determine whether each number is a multiple of 5. 675 1,578 TRY IT :: 282 determine whether each number is a multiple of 5. (a) 421 (b) 2,690 TRY IT :: Determine whether each number is a multiple of 10: (a) 17 (b) 3,540 TRY IT :: 2.84 Determine whether each number is a multiple of 10: (a) 110 (b) 7,595 TRY IT :: 2.85 Determine whether each number is a multiple of 3: (a) 954 (b) 3,742 TRY IT :: 286 Determine whether each number is a multiple of 3: (a) 643 (b) 8,379 TRY IT :: 2.87 Determine whether the given number is divisible by 2, 3, 5, and 10.TRY IT :: 2.88 Determine whether the given number is divisible by 2, 3, 5, and 10.TRY IT :: 2.89 Determine whether the given number is divisible by 2, 3, 5, and 10.TRY IT :: 2.90 Determine whether the given number is divisible by 2, 3, 5, and 10.TRY IT :: 2.91 Find all the factors of the given number:TRY IT :: 2.92 Find all the factors of the given number:TRY IT :: 2.93 Identify the number as prime or composite:TRY IT :: 2.94 Identify the number as prime or composite:In the following exercises, list all the multiples less than 50 for the given number. 215. 2 In the following exercises, list all the multiples less than 50 for the given number. 3 In the following exercises, list all the multiples less than 50 for the given number. 4 In the following exercises, list all the multiples less than 50 for the given number. 5 In the following exercises, list all the multiples less than 50 for the given number. 6 In the following exercises, list all the multiples less than 50 for the given number. 7 In the following exercises, list all the multiples less than 50 for the given number. 8 In the following exercises, list all the multiples less than 50 for the given number. 9 In the following exercises, list all the multiples less than 50 for the given number. 10 In the following exercises, list all the multiples less than 50 for the given number. 12 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 84 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 96 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3,4, 5, 6 and 10. 75 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10.In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 168 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5,6 and 10.In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5,6 and 10. 900 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 800 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 896 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 942 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 375 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 750 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 350 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 550 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 1430 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10.In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6 and 10. 22,335 In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 4, 5, 6, and 10. 39,075 In the following exercises, find all the factors of the given number.In the following exercises, find all the factors of the given number. 42 In the following exercises, find all the factors of the given number. 60 In the following exercises, find all the factors of the given number. 48 In the following exercises, find all the factors of the given number. 144 In the following exercises, find all the factors of the given number. 200 In the following exercises, find all the factors of the given number. 588 In the following exercises, find all the factors of the given number. 576 In the following exercises, determine if the given number is prime or composite. 43 In the following exercises, determine if the given number is prime or composite. 67 In the following exercises, determine if the given number is prime or composite. 39 In the following exercises, determine if the given number is prime or composite. 53 In the following exercises, determine if the given number is prime or composite. 71 In the following exercises, determine if the given number is prime or composite. 119 In the following exercises, determine if the given number is prime or composite. 481 In the following exercises, determine if the given number is prime or composite. 221 In the following exercises, determine if the given number is prime or composite. 209 In the following exercises, determine if the given number is prime or composite. 359 In the following exercises, determine if the given number is prime or composite. 667 In the following exercises, determine if the given number is prime or composite. 1771 Banking. Frank’s grandmother gave him $100 at his high school graduation. Instead of spending it, Frank opened a bank account. Every week, he added $15 to the account. The table shows how much money Frank had put in the account by the end of each week. Complete the table by filling in the blanks.Banking In March, Gina opened a Christmas club savings account at her bank. She deposited $75 to open the account. Every week, she added $20 to the account. The table shows how much money Gina had put in the account by the end of each week. Complete the table by filling in the blanks.If a number is divisible by 2 and by 3, why is it also divisible by 6?What is the difference between prime numbers and composite numbers?TRY IT :: 2.95 Find the prime factorization using the factor tree method: 80 TRY IT :: 2.96 Find the prime factorization using the factor tree method: 60 TRY IT :: 2.97 Find the prime factorization using the factor tree method: 126 TRY IT :: 2.98 Find the prime factorization using the factor tree method: 294 TRY IT :: 2.99 Find the prime factorization using the ladder method: 80 TRY IT :: 2.100 Find the prime factorization using the ladder method: 60 TRY IT :: 2.101 Find the prime factorization using the ladder method. 126 TRY IT :: 2.102 Find the prime factorization using the ladder method. 294 TRY IT :: 2.103 Find the least common multiple (LCM) of the given numbers: 9 and 12 TRY IT :: 2.104 Find the least common multiple (LCM) of the given numbers: 18 and 24 TRY IT :: 2.105 Find the LCM using the prime factors method. 15 and 20 TRY IT :: 2.106 Find the LCM using the prime factors method. 15 and 35 TRY IT :: 2.107 Find the LCM using the prime factors method: 55, 88 TRY IT :: 2.108 Find the LCM using the prime factors method: 60, 72 In the following exercises, find the prime factorization of each number using the factor tree method.In the following exercises, find the prime factorization of each number using the factor tree method. 78 In the following exercises, find the prime factorization of each number using the factor tree method. 132 In the following exercises, find the prime factorization of each number using the factor tree method. 455 In the following exercises, find the prime factorization of each number using the factor tree method. 693 In the following exercises, find the prime factorization of each number using the factor tree method. 420 In the following exercises, find the prime factorization of each number using the factor tree method. 115 In the following exercises, find the prime factorization of each number using the factor tree method. 225 In the following exercises, find the prime factorization of each number using the factor tree method.In the following exercises, find the prime factorization of each number using the factor tree method.In the following exercises, find the prime factorization of each number using the ladder method. 56 In the following exercises, find the prime factorization of each number using the factor ladder method. 72 In the following exercises, find the prime factorization of each number using the ladder method. 168 In the following exercises, find the prime factorization of each number using the ladder method. 252 In the following exercises, find the prime factorization of each number using the ladder method. 391 In the following exercises, find the prime factorization of each number using the ladder method. 400 In the following exercises, find the prime factorization of each number using the ladder method.In the following exercises, find the prime factorization of each number using the ladder method. 627 In the following exercises, find the prime factorization of each number using the ladder method.In the following exercises, find the prime factorization of each number using the ladder method.In the following exercises, find the prime factorization of each number using any method. 150 In the following exercises, find the prime factorization of each number using any method. 180 In the following exercises, find the prime factorization of each number any method. 525 In the following exercises, find the prime factorization of each number using any method. 444 In the following exercises, find the prime factorization of each number any method. 36 In the following exercises, find the prime factorization of each number any method. 50 In the following exercises, find the prime factorization of each number using any method. 350 In the following exercises, find the prime factorization of each number using any method. 144 In the following exercises, find the least common multiple (LCM) by listing multiples.In the following exercises, find the least common multiple (LCM) by listing multiples. 4, 3 In the following exercises, find the least common multiple (LCM) by listing multiples. 6, 15 In the following exercises, find the least common multiple (LCM) by listing multiples. 12, 16 In the following exercises, find the least common multiple (LCM) by listing multiples. 30, 40 In the following exercises, find the least common multiple (LCM) by listing multiples. 20, 30 In the following exercises, find the least common multiple (LCM) by listing multiples. 60, 75 In the following exercises, find the least common multiple (LCM) by listing multiples. 302. 44 , 55 In the following exercises, find the least common multiple (LCM) by using the prime factors method.In the following exercises, find the least common multiple (LCM) by using the prime factors method.In the following exercises, find the least common multiple (LCM) by using the prime factors method. 24,30 In the following exercises, find the least common multiple (LCM) by using the prime factors method.In the following exercises, find the least common multiple (LCM) by using the prime factors method.In the following exercises, find the least common multiple (LCM) by using the prime factors method.In the following exercises, find the least common multiple (LCM) using any method. 6, 21 In the following exercises, find the least common multiple (LCM) using any method. 9, 15 In the following exercises, find the least common multiple (LCM) using any method. 24, 30 In the following exercises, find the least common multiple (LCM) using any method. 32, 40 Grocery shopping Hot dogs are sold in packages of ten, but hot dog buns come in packs of eight. What is the smallest number of hot dogs and buns that can be purchased if you want to have the same number of hot dogs and buns? (Hint: it is the LCM!)Grocery shopping Paper plates are sold in packages of 12 and party cups come in packs of 8. What is the smallest number of plates and cups you can purchase if you want to have the same number of each? (Hint: it is the LCM!)Do you prefer to find the prime factorization of a Composite number by using the factor tree method or the ladder method? Why?Do you prefer to find the LCM by listing multiples or by using the prime factors method? Why?In the following exercises, translate from algebra to English. 3.8 In the following exercises, translate from algebra to English. 12x In the following exercises, translate from algebra to English. 246 In the following exercises, translate from algebra to English. 9+2a In the following exercises, translate from algebra to English. 5047 In the following exercises, translate from algebra to English. 3y15 In the following exercises, translate from algebra to English. n+4=13 In the following exercises, translate from algebra to English. 32k=7 In the following exercises, determine if each is an expression or equation. 5+u=84 In the following exercises, determine if each is an expression or equation. 366s In the following exercises, determine if each is an expression or equation. 4y11 In the following exercises, determine if each is an expression or equation. 10x=120 In the following exercises, write in exponential form. 222 In the following exercises, write in exponential form. aaaaa In the following exercises, write in exponential form. xxxxxx In the following exercises, write in exponential form. 101010 In the following exercises, write in expanded form. 84 In the following exercises, write in expanded form. 36 In the following exercises, write in expanded form. y5 In the following exercises, write in expanded form. n4 In the following exercises, simplify each expression. 34 In the following exercises, simplify each expression. 106 In the following exercises, simplify each expression. 27 In the following exercises, simplify each expression. 340. 43 In the following exercises, simplify. 10+25 In the following exercises, simplify. (10+2)5 In the following exercises, simplify. (30+6)2

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