What is the factorization? -3x^3+15x^2+42x A. 3(x+7)(x+2) B. 3(x^2)(x+2) C. -3x(x+7)(x-2) D. -3x(x-7)(x+2)

asked Sep 15, 2018 215k views

1 vote

What is the factorization?

-3x^3+15x^2+42x

A. 3(x+7)(x+2)
B. 3(x^2)(x+2)
C. -3x(x+7)(x-2)
D. -3x(x-7)(x+2)

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6 votes

First take out the GCF
-3x(x^2-5x-14)
-3x(x-7)(x+2)
-7+2=-5
-7*2=-14

Answer: D

Jenniece answered Sep 19, 2018

6.3k points

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