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x4=12.5x=
We move all terms to the left:
x4-(12.5x)=0
We add all the numbers together, and all the variables
x4-(+12.5x)=0
We add all the numbers together, and all the variables
x^4-(+12.5x)=0
We get rid of parentheses
x^4-12.5x=0
We do not support expression: x^4
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