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

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



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

We move all terms to the left:

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

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

a = -1; b = -1; c = -7;
Δ = b2-4ac
Δ = -12-4·(-1)·(-7)
Δ = -27
Delta is less than zero, so there is no solution for the equation

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