X=2/y-3

Solution for X=2/y-3 equation:

X=2/X-3

We move all terms to the left:

X-(2/X-3)=0


Domain of the equation: X-3)!=0

X∈R


We get rid of parentheses

X-2/X+3=0

We multiply all the terms by the denominator


X*X+3*X-2=0

We add all the numbers together, and all the variables

3X+X*X-2=0

Wy multiply elements

X^2+3X-2=0

a = 1; b = 3; c = -2;
Δ = b2-4ac
Δ = 32-4·1·(-2)
Δ = 17
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(3)-\sqrt{17}}{2*1}=\frac{-3-\sqrt{17}}{2}
$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+\sqrt{17}}{2*1}=\frac{-3+\sqrt{17}}{2}
$