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(2x+6)(x+7)=2x^2^
We move all terms to the left:
(2x+6)(x+7)-(2x^2^)=0
determiningTheFunctionDomain -2x^2^+(2x+6)(x+7)=0
We multiply parentheses ..
-2x^2^+(+2x^2+14x+6x+42)=0
We get rid of parentheses
-2x^2^+2x^2+14x+6x+42=0
We add all the numbers together, and all the variables
2x^2-2x^2^+20x+42=0
We move all terms containing x to the left, all other terms to the right
2x^2-2x^2^+20x=-42
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