Question 320221
Multiply the answer to see if you get the original polynomial.
{{{x^2+4x-5=0}}}
{{{(x+5)(x-1)=0}}}
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{{{(x+5)(x-1)=x^2-x+5x-5}}}
{{{(x+5)(x-1)=x^2+4x-5}}}
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Since I got back the polynomial I started with the factors are correct.