F(x)=2x+9/x-3

Solution for F(x)=2x+9/x-3 equation:

(F)=2F+9/F-3

We move all terms to the left:

(F)-(2F+9/F-3)=0


Domain of the equation: F-3)!=0

F∈R


We get rid of parentheses

F-2F-9/F+3=0

We multiply all the terms by the denominator


F*F-2F*F+3*F-9=0

We add all the numbers together, and all the variables

3F+F*F-2F*F-9=0

Wy multiply elements

F^2-2F^2+3F-9=0

We add all the numbers together, and all the variables

-1F^2+3F-9=0

a = -1; b = 3; c = -9;
Δ = b2-4ac
Δ = 32-4·(-1)·(-9)
Δ = -27
Delta is less than zero, so there is no solution for the equation