SOLUTION: How can you tell if you factored a polynomial expression correctly? Explain by giving an example.

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Question 320221: How can you tell if you factored a polynomial expression correctly? Explain by giving an example.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Multiply the answer to see if you get the original polynomial.
x%5E2%2B4x-5=0
%28x%2B5%29%28x-1%29=0
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.
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%28x%2B5%29%28x-1%29=x%5E2-x%2B5x-5
%28x%2B5%29%28x-1%29=x%5E2%2B4x-5
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.
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Since I got back the polynomial I started with the factors are correct.