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(3x-1)(x+1)=(3x)(3x)
We move all terms to the left:
(3x-1)(x+1)-((3x)(3x))=0
determiningTheFunctionDomain (3x-1)(x+1)-3x3x=0
We multiply parentheses ..
(+3x^2+3x-1x-1)-3x3x=0
We get rid of parentheses
3x^2+3x-1x-3x3x-1=0
We add all the numbers together, and all the variables
3x^2+2x-3x3x-1=0
We move all terms containing x to the left, all other terms to the right
3x^2+2x-3x3x=1
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