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(6x+3)^2-(6x-5)(6x+5)+2=0
We use the square of the difference formula
36x^2+(6x+3)^2+25+2=0
We add all the numbers together, and all the variables
36x^2+(6x+3)^2+27=0
We move all terms containing x to the left, all other terms to the right
36x^2+(6x+3)^2=-27
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