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((5x)x(3x))-((x)x(x))=126
We move all terms to the left:
((5x)x(3x))-((x)x(x))-(126)=0
determiningTheFunctionDomain 5xx3x-xxx-126=0
We move all terms containing x to the left, all other terms to the right
5xx3x-xxx=126
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