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z(z3+1)=5+z3
We move all terms to the left:
z(z3+1)-(5+z3)=0
We add all the numbers together, and all the variables
z(+z^3+1)-(+z^3+5)=0
We multiply parentheses
z^4-(+z^3+5)+z=0
We get rid of parentheses
z^4-z^3+z-5=0
We do not support ezpression: z^4
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