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x7(x+3)+2(3-2x)=30
We move all terms to the left:
x7(x+3)+2(3-2x)-(30)=0
We add all the numbers together, and all the variables
x7(x+3)+2(-2x+3)-30=0
We multiply parentheses
x^8+3x^7-4x+6-30=0
We do not support expression: x^8
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