-2(x+1)2=20

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Solution for -2(x+1)2=20 equation: 



-2(x+1)2=20

We move all terms to the left:

-2(x+1)2-(20)=0

We multiply parentheses

-4x-4-20=0

We add all the numbers together, and all the variables

-4x-24=0

We move all terms containing x to the left, all other terms to the right

-4x=24

x=24/-4

x=-6

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