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(12x+3)^2-4x+2=13
We move all terms to the left:
(12x+3)^2-4x+2-(13)=0
We add all the numbers together, and all the variables
-4x+(12x+3)^2-11=0
We move all terms containing x to the left, all other terms to the right
-4x+(12x+3)^2=11
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