x+16=225/x

Solution for x+16=225/x equation:

x+16=225/x

We move all terms to the left:

x+16-(225/x)=0


Domain of the equation: x)!=0

x!=0/1

x!=0

x∈R


We add all the numbers together, and all the variables

x-(+225/x)+16=0

We get rid of parentheses

x-225/x+16=0

We multiply all the terms by the denominator


x*x+16*x-225=0

We add all the numbers together, and all the variables

16x+x*x-225=0

Wy multiply elements

x^2+16x-225=0

a = 1; b = 16; c = -225;
Δ = b2-4ac
Δ = 162-4·1·(-225)
Δ = 1156
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1156}=34$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(16)-34}{2*1}=\frac{-50}{2}
=-25
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(16)+34}{2*1}=\frac{18}{2}
=9
$