F(-2)=-3x^2-2x-7

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Solution for F(-2)=-3x^2-2x-7 equation: 



(-2)=-3F^2-2F-7

We move all terms to the left:

(-2)-(-3F^2-2F-7)=0

We add all the numbers together, and all the variables

-(-3F^2-2F-7)-2=0

We get rid of parentheses

3F^2+2F+7-2=0

We add all the numbers together, and all the variables

3F^2+2F+5=0

a = 3; b = 2; c = +5;
Δ = b2-4ac
Δ = 22-4·3·5
Δ = -56
Delta is less than zero, so there is no solution for the equation

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