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3(4x+1)^(2)-1=11
We move all terms to the left:
3(4x+1)^(2)-1-(11)=0
We add all the numbers together, and all the variables
3(4x+1)^2-12=0
We move all terms containing x to the left, all other terms to the right
3(4x+1)^2=12
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