F(x)=-2x^2+4x-9

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Solution for F(x)=-2x^2+4x-9 equation: 



(F)=-2F^2+4F-9

We move all terms to the left:

(F)-(-2F^2+4F-9)=0

We get rid of parentheses

2F^2-4F+F+9=0

We add all the numbers together, and all the variables

2F^2-3F+9=0

a = 2; b = -3; c = +9;
Δ = b2-4ac
Δ = -32-4·2·9
Δ = -63
Delta is less than zero, so there is no solution for the equation

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