X2-x=-840

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Solution for X2-x=-840 equation: 



X2-X=-840

We move all terms to the left:

X2-X-(-840)=0

We add all the numbers together, and all the variables

X^2-1X+840=0

a = 1; b = -1; c = +840;
Δ = b2-4ac
Δ = -12-4·1·840
Δ = -3359
Delta is less than zero, so there is no solution for the equation

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