6) Compute -3²(-2)³.

Select one:

A.-72

B.72

C.-36

D.36

7) Compute (-4y²)³.

Select one:

A.-4y⁵

B.-4y⁶

C.-64y⁶

D.64y⁶

⁸⁾ Compute (-5x⁴)(4x⁵)

Select one:

A.-20x⁹

B.-20x²⁰

C.-9x⁹

D.-x⁹

⁹⁾ Compute 5x³(6x²- 2x + 3).

Select one:

A.11x³- 7x + 8

B.30x³-10x²+ 15

C.30x⁵-10x⁴+ 15x³

D.30x⁶-10x⁵+ 15x⁴

¹⁰⁾ Compute (x + 3)(x + 4).

Select one:

A.x²+ 12x + 7

B.2x²+ 12x + 7

C.x²+ 7x + 12

D.2x²+ 7x + 12