-80=x2+2x

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Solution for -80=x2+2x equation: 



-80=x2+2x

We move all terms to the left:

-80-(x2+2x)=0

We add all the numbers together, and all the variables

-(+x^2+2x)-80=0

We get rid of parentheses

-x^2-2x-80=0

We add all the numbers together, and all the variables

-1x^2-2x-80=0

a = -1; b = -2; c = -80;
Δ = b2-4ac
Δ = -22-4·(-1)·(-80)
Δ = -316
Delta is less than zero, so there is no solution for the equation

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