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Which expression is equal to 

 

AngelRay  May 26, 2018
 #1
avatar+7026 
+1

\(\quad(x+2)(-x^2+2x-6)\\ =x(-x^2+2x-6)+2(-x^2+2x-6)\\ =-x^3+2x^2-6x-2x^2+4x-12\\ =-x^3-2x-12\)

Therefore the answer is the third option.

MaxWong  May 26, 2018

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