2/x-1=x+3

Solution for 2/x-1=x+3 equation:

2/x-1=x+3

We move all terms to the left:

2/x-1-(x+3)=0


Domain of the equation: x!=0

x∈R


We get rid of parentheses

2/x-x-3-1=0

We multiply all the terms by the denominator


-x*x-3*x-1*x+2=0

We add all the numbers together, and all the variables

-4x-x*x+2=0

Wy multiply elements

-1x^2-4x+2=0

a = -1; b = -4; c = +2;
Δ = b2-4ac
Δ = -42-4·(-1)·2
Δ = 24
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{24}=\sqrt{4*6}=\sqrt{4}*\sqrt{6}=2\sqrt{6}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-4)-2\sqrt{6}}{2*-1}=\frac{4-2\sqrt{6}}{-2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-4)+2\sqrt{6}}{2*-1}=\frac{4+2\sqrt{6}}{-2}
$