F(x)=X^2+21x+120

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Solution for F(x)=X^2+21x+120 equation: 



(F)=F^2+21F+120

We move all terms to the left:

(F)-(F^2+21F+120)=0

We get rid of parentheses

-F^2+F-21F-120=0

We add all the numbers together, and all the variables

-1F^2-20F-120=0

a = -1; b = -20; c = -120;
Δ = b2-4ac
Δ = -202-4·(-1)·(-120)
Δ = -80
Delta is less than zero, so there is no solution for the equation

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