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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

-1F^2+2F-6=0

a = -1; b = 2; c = -6;
Δ = b2-4ac
Δ = 22-4·(-1)·(-6)
Δ = -20
Delta is less than zero, so there is no solution for the equation

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