F(x)=2x/x-2

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



(F)=2F/F-2

We move all terms to the left:

(F)-(2F/F-2)=0



Domain of the equation: F-2)!=0

F∈R



We get rid of parentheses

F-2F/F+2=0

We multiply all the terms by the denominator


F*F-2F+2*F=0

We add all the numbers together, and all the variables

F*F=0

Wy multiply elements

F^2=0

a = 1; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·1·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$F=\frac{-b}{2a}=\frac{0}{2}=0$

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