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80=-x^2-x
We move all terms to the left:
80-(-x^2-x)=0
We get rid of parentheses
x^2+x+80=0
a = 1; b = 1; c = +80;
Δ = b2-4ac
Δ = 12-4·1·80
Δ = -319
Delta is less than zero, so there is no solution for the equation
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