H(x)=x^2+4x+7

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Solution for H(x)=x^2+4x+7 equation: 



(H)=H^2+4H+7

We move all terms to the left:

(H)-(H^2+4H+7)=0

We get rid of parentheses

-H^2+H-4H-7=0

We add all the numbers together, and all the variables

-1H^2-3H-7=0

a = -1; b = -3; c = -7;
Δ = b2-4ac
Δ = -32-4·(-1)·(-7)
Δ = -19
Delta is less than zero, so there is no solution for the equation

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