x-(40/x)=6

Solution for x-(40/x)=6 equation:

x-(40/x)=6

We move all terms to the left:

x-(40/x)-(6)=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-(+40/x)-6=0

We get rid of parentheses

x-40/x-6=0

We multiply all the terms by the denominator


x*x-6*x-40=0

We add all the numbers together, and all the variables

-6x+x*x-40=0

Wy multiply elements

x^2-6x-40=0

a = 1; b = -6; c = -40;
Δ = b2-4ac
Δ = -62-4·1·(-40)
Δ = 196
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{196}=14$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-6)-14}{2*1}=\frac{-8}{2}
=-4
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-6)+14}{2*1}=\frac{20}{2}
=10
$