30/2x=10/x+2

Solution for 30/2x=10/x+2 equation:

30/2x=10/x+2

We move all terms to the left:

30/2x-(10/x+2)=0


Domain of the equation: 2x!=0

x!=0/2

x!=0

x∈R



Domain of the equation: x+2)!=0

x∈R


We get rid of parentheses

30/2x-10/x-2=0

We calculate fractions


30x/2x^2+(-20x)/2x^2-2=0

We multiply all the terms by the denominator


30x+(-20x)-2*2x^2=0

Wy multiply elements

-4x^2+30x+(-20x)=0

We get rid of parentheses

-4x^2+30x-20x=0

We add all the numbers together, and all the variables

-4x^2+10x=0

a = -4; b = 10; c = 0;
Δ = b2-4ac
Δ = 102-4·(-4)·0
Δ = 100
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{100}=10$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(10)-10}{2*-4}=\frac{-20}{-8}
=2+1/2
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(10)+10}{2*-4}=\frac{0}{-8}
=0
$