19. Which of the equations is transformable to quadratic equation? B. x2(x – 4) = 16 A. x(x – 4) = 16 C. 2(x – 4) = 16 D. x(x – 4)² = 16 -2 = 1? D.{ -, 3} 2x 20. What is the solution set of the rational equation A. (3} B. {1} c.( -를 ,3) 21. The sum of two numbers is 11. The difference of their squares is 11. What are the numbers? C. 3 and 8 D. 2 and 9 A. 4 and 7 B. 5 and 6 22. The altitude of a triangle is 3 cm. less than the base. The area of the triangle is 35 square centimeters. How long is the base? A. 5 cm В. 7 ст C. 8 cm D. 10 cm 23. Arlyn takes 3 more hours than Amy to do the work alone. What expression represents the amount of work per hour done by Arlyn? A. ! В. 1 C.- x-3 D. x+5 x+3

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