F(x)=x2+8x+15

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Solution for F(x)=x2+8x+15 equation: 



(F)=F2+8F+15

We move all terms to the left:

(F)-(F2+8F+15)=0

We add all the numbers together, and all the variables

-(+F^2+8F+15)+F=0

We get rid of parentheses

-F^2-8F+F-15=0

We add all the numbers together, and all the variables

-1F^2-7F-15=0

a = -1; b = -7; c = -15;
Δ = b2-4ac
Δ = -72-4·(-1)·(-15)
Δ = -11
Delta is less than zero, so there is no solution for the equation

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