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x^2+9x+18=0x^2+9x+18=0
We move all terms to the left:
x^2+9x+18-(0x^2+9x+18)=0
We get rid of parentheses
x^2-0x^2+9x-9x-18+18=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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