y+3/y-5=9

Solution for y+3/y-5=9 equation:

y+3/y-5=9

We move all terms to the left:

y+3/y-5-(9)=0


Domain of the equation: y!=0

y∈R


We add all the numbers together, and all the variables

y+3/y-14=0

We multiply all the terms by the denominator


y*y-14*y+3=0

We add all the numbers together, and all the variables

-14y+y*y+3=0

Wy multiply elements

y^2-14y+3=0

a = 1; b = -14; c = +3;
Δ = b2-4ac
Δ = -142-4·1·3
Δ = 184
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{184}=\sqrt{4*46}=\sqrt{4}*\sqrt{46}=2\sqrt{46}$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-14)-2\sqrt{46}}{2*1}=\frac{14-2\sqrt{46}}{2}
$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-14)+2\sqrt{46}}{2*1}=\frac{14+2\sqrt{46}}{2}
$