30/x=x+1

Solution for 30/x=x+1 equation:

30/x=x+1

We move all terms to the left:

30/x-(x+1)=0


Domain of the equation: x!=0

x∈R


We get rid of parentheses

30/x-x-1=0

We multiply all the terms by the denominator


-x*x-1*x+30=0

We add all the numbers together, and all the variables

-1x-x*x+30=0

Wy multiply elements

-1x^2-1x+30=0

a = -1; b = -1; c = +30;
Δ = b2-4ac
Δ = -12-4·(-1)·30
Δ = 121
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{121}=11$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-1)-11}{2*-1}=\frac{-10}{-2}
=+5
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+11}{2*-1}=\frac{12}{-2}
=-6
$