F(-2)=x^2+4x+6

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Solution for F(-2)=x^2+4x+6 equation: 



(-2)=F^2+4F+6

We move all terms to the left:

(-2)-(F^2+4F+6)=0

We add all the numbers together, and all the variables

-(F^2+4F+6)-2=0

We get rid of parentheses

-F^2-4F-6-2=0

We add all the numbers together, and all the variables

-1F^2-4F-8=0

a = -1; b = -4; c = -8;
Δ = b2-4ac
Δ = -42-4·(-1)·(-8)
Δ = -16
Delta is less than zero, so there is no solution for the equation

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