SOLUTION: I need to factor and I do not understand this equation, please help 3a^2(a-b)-6a(a-b)+21(a-b) 1)3(a-b)(a^2-2a+7) 2)(3a-b)(a^2-2a+7) 3)(a-b)(3a^2-6a+21) 4)3(a-b)(a^2-6a+21)

Question 90054This question is from textbook algebra
: I need to factor and I do not understand this equation, please help
3a^2(a-b)-6a(a-b)+21(a-b)
1)3(a-b)(a^2-2a+7)
2)(3a-b)(a^2-2a+7)
3)(a-b)(3a^2-6a+21)
4)3(a-b)(a^2-6a+21)
This question is from textbook algebra

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I need to factor and I do not understand this equation, please help
3a^2(a-b)-6a(a-b)+21(a-b)
= 3(a-b)(a^2-2a+7)
================

1)3(a-b)(a^2-2a+7)
2)(3a-b)(a^2-2a+7)
3)(a-b)(3a^2-6a+21)
4)3(a-b)(a^2-6a+21)
-----------
Cheers,
stan H>

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