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5(x+2)^2+23(x+2)+12=0
We multiply parentheses
5(x+2)^2+23x+46+12=0
We add all the numbers together, and all the variables
23x+5(x+2)^2+58=0
We move all terms containing x to the left, all other terms to the right
23x+5(x+2)^2=-58
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