-18=x^2-x

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Solution for -18=x^2-x equation: 



-18=x^2-x

We move all terms to the left:

-18-(x^2-x)=0

We get rid of parentheses

-x^2+x-18=0

We add all the numbers together, and all the variables

-1x^2+x-18=0

a = -1; b = 1; c = -18;
Δ = b2-4ac
Δ = 12-4·(-1)·(-18)
Δ = -71
Delta is less than zero, so there is no solution for the equation

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