F(x-4)=x2-3

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Solution for F(x-4)=x2-3 equation: 



(F-4)=F2-3

We move all terms to the left:

(F-4)-(F2-3)=0

We add all the numbers together, and all the variables

-(+F^2-3)+(F-4)=0

We get rid of parentheses

-F^2+F+3-4=0

We add all the numbers together, and all the variables

-1F^2+F-1=0

a = -1; b = 1; c = -1;
Δ = b2-4ac
Δ = 12-4·(-1)·(-1)
Δ = -3
Delta is less than zero, so there is no solution for the equation

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