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Simplify x2+x12x24x+21÷x+4x+7

 Jun 18, 2020
 #1
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First, we have to apply the fraction rule, turning it into (x2+x-12)/(-x2-3x+21)(x+7)/(x+4)

 

We simplify it to be -(x+4)/(x+7)(x+7)/(x+4)

 

We multiply it to -(x+7)/(x+7)

 

Simplify that to be -1

 

Yay!

 Jun 18, 2020

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