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X+2(X+2)=176
We move all terms to the left:
X+2(X+2)-(176)=0
We multiply parentheses
X+2X+4-176=0
We add all the numbers together, and all the variables
3X-172=0
We move all terms containing X to the left, all other terms to the right
3X=172
X=172/3
X=57+1/3
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