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3y^3+20y^2=7y Solve the polynomial by factoring. The answer is y(3y-1)(y+7) I can't seem to figure out how they got the answer. I need an explanation before my test tomorrow.
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3y^3+20y^2=7y

Solve the polynomial by factoring. The answer is y(3y-1)(y+7)
I can't seem to figure out how they got the answer. I need an explanation before my test tomorrow.

User Chrickso
by
8.0k points

1 Answer

3 votes

Answer:

Hello,

Explanation:


3y^3+20y^2-7y=y(3y^2+20y-7)\\\\=y(3y^2+21y-y-7)\\\\=y(3y(y+7)-(y+7))\\\\=y(y+7)(3y-1)\\

User Nikhil Katre
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8.4k points
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