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(x+2)2+2x=4
We move all terms to the left:
(x+2)2+2x-(4)=0
We add all the numbers together, and all the variables
2x+(x+2)2-4=0
We multiply parentheses
2x+2x+4-4=0
We add all the numbers together, and all the variables
4x=0
x=0/4
x=0
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