12/x-8=2x

Solution for 12/x-8=2x equation:

12/x-8=2x

We move all terms to the left:

12/x-8-(2x)=0


Domain of the equation: x!=0

x∈R


We add all the numbers together, and all the variables

-2x+12/x-8=0

We multiply all the terms by the denominator


-2x*x-8*x+12=0

We add all the numbers together, and all the variables

-8x-2x*x+12=0

Wy multiply elements

-2x^2-8x+12=0

a = -2; b = -8; c = +12;
Δ = b2-4ac
Δ = -82-4·(-2)·12
Δ = 160
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:

$\sqrt{\Delta}=\sqrt{160}=\sqrt{16*10}=\sqrt{16}*\sqrt{10}=4\sqrt{10}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-8)-4\sqrt{10}}{2*-2}=\frac{8-4\sqrt{10}}{-4}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-8)+4\sqrt{10}}{2*-2}=\frac{8+4\sqrt{10}}{-4}
$