= 5i + 4j and v=4i - 3j, determine -9u - v. Given u O-9u - v = -49i - 33j O-9u - v = -40i - 42j O-9u - v = -42i + 42j O-9u - v = -41i - 42j -9u - v = 221 - 33j

verify that 3(A + B) = 3A + 3B

9 Let A = 1 3 5 1 and B = 1 4 0 Find - 3A + 2B. - 3A + 2B =

Assume that 12 + 22 + · · · + n2 = an3 + bn2 +en + d. Find a, b, c, and d.

Simplify 362-3y3 Hoczy-3

If possible, write -3 – a – 2x? as a linear combination of 2 + x + x?, 2 + 2x + x² and 3 + 3x + 2x2. Otherwise, enter DNE in all answer blanks. -3 - a – 2x? = (2 +x+ a?)+ (2 + 2x + a?)+ (3 + 3x + 2a?).

If possible, write -6- 19x - 11x² as a linear combination of -1 - x - x², 1+ 2x + x² and -1 -3x - 2x². Otherwise, enter DNE in all answer blanks. (-1- x - x²)+ (1 + 2x + x²)+ -619x11x² = (-1-3x - 2x²).

Perform the operation

perform the indicated operation  ( 8r2+5r-14)+(-7r2-17r+7)=

3t(2f - 5t + 4) = 68- 15P + 12t O True O False osearch O H Cn