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2z-2z(1+2)=28
We move all terms to the left:
2z-2z(1+2)-(28)=0
We add all the numbers together, and all the variables
2z-2z3-28=0
We add all the numbers together, and all the variables
-2z^3+2z-28=0
We do not support ezpression: z^3
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