H(x)=-x^2+x-7

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Solution for H(x)=-x^2+x-7 equation: 



(H)=-H^2+H-7

We move all terms to the left:

(H)-(-H^2+H-7)=0

We get rid of parentheses

H^2-H+H+7=0

We add all the numbers together, and all the variables

H^2+7=0

a = 1; b = 0; c = +7;
Δ = b2-4ac
Δ = 02-4·1·7
Δ = -28
Delta is less than zero, so there is no solution for the equation

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