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2z(z+8)=2z^2+16z-7
We move all terms to the left:
2z(z+8)-(2z^2+16z-7)=0
We multiply parentheses
2z^2+16z-(2z^2+16z-7)=0
We get rid of parentheses
2z^2-2z^2+16z-16z+7=0
We add all the numbers together, and all the variables
7!=0
There is no solution for this equation
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