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(F)=F3-7F^2+2F-40
We move all terms to the left:
(F)-(F3-7F^2+2F-40)=0
We get rid of parentheses
7F^2-F3-2F+F+40=0
We add all the numbers together, and all the variables
7F^2-1F^3-1F+40=0
We do not support eFpression: F^3
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