Question 663341: Please solve polynomial equation by factoring
x^3+x^2-4x-4=0
Thanks
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Please solve polynomial equation by factoring
x^3+x^2-4x-4=0
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First, try the factors of 4.
f(x) = x^3+x^2-4x-4=0
f(-1) = 0 --> (x+1) is a factor.
Divide by that, then it's a quadratic.
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The trick is, try something. It won't solve itself.
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