F(x)=(5x+30)/x

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Solution for F(x)=(5x+30)/x equation: 



(F)=(5F+30)/F

We move all terms to the left:

(F)-((5F+30)/F)=0



Domain of the equation: F)!=0

F!=0/1

F!=0

F∈R



We multiply all the terms by the denominator


F*F)-((5F+30)=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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