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(x+6)^2-(x)^2=204
We move all terms to the left:
(x+6)^2-(x)^2-(204)=0
determiningTheFunctionDomain -x^2+(x+6)^2-204=0
We add all the numbers together, and all the variables
-1x^2+(x+6)^2-204=0
We move all terms containing x to the left, all other terms to the right
-1x^2+(x+6)^2=204
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