8=-4x^2-7x

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Solution for 8=-4x^2-7x equation: 



8=-4x^2-7x

We move all terms to the left:

8-(-4x^2-7x)=0

We get rid of parentheses

4x^2+7x+8=0

a = 4; b = 7; c = +8;
Δ = b2-4ac
Δ = 72-4·4·8
Δ = -79
Delta is less than zero, so there is no solution for the equation

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