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-1+4x=x3+18x
We move all terms to the left:
-1+4x-(x3+18x)=0
We add all the numbers together, and all the variables
-(+x^3+18x)+4x-1=0
We get rid of parentheses
-x^3-18x+4x-1=0
We do not support expression: x^3
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