2x=6/x+1

Solution for 2x=6/x+1 equation:

2x=6/x+1

We move all terms to the left:

2x-(6/x+1)=0


Domain of the equation: x+1)!=0

x∈R


We get rid of parentheses

2x-6/x-1=0

We multiply all the terms by the denominator


2x*x-1*x-6=0

We add all the numbers together, and all the variables

-1x+2x*x-6=0

Wy multiply elements

2x^2-1x-6=0

a = 2; b = -1; c = -6;
Δ = b2-4ac
Δ = -12-4·2·(-6)
Δ = 49
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{49}=7$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-1)-7}{2*2}=\frac{-6}{4}
=-1+1/2
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+7}{2*2}=\frac{8}{4}
=2
$