SOLUTION: I don't know how to face a^3-4a^2-21a, I know tha ac method won't work should I start out by factoring out the a, so it will say a(a^2-4a-21)

SOLUTION: I don't know how to face a^3-4a^2-21a, I know tha ac method won't work should I start out by factoring out the a, so it will say a(a^2-4a-21)

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Question 583251: I don't know how to face a^3-4a^2-21a, I know tha ac method won't work should I start out by factoring out the a, so it will say a(a^2-4a-21)
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
I don't know how to face a^3-4a^2-21a, I know tha ac method won't work should I start out by factoring out the a, so it will say a(a^2-4a-21)
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a^2-4a-21 can be factored.

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