6x-1/x=-4

Solution for 6x-1/x=-4 equation:

6x-1/x=-4

We move all terms to the left:

6x-1/x-(-4)=0


Domain of the equation: x!=0

x∈R


We add all the numbers together, and all the variables

6x-1/x+4=0

We multiply all the terms by the denominator


6x*x+4*x-1=0

We add all the numbers together, and all the variables

4x+6x*x-1=0

Wy multiply elements

6x^2+4x-1=0

a = 6; b = 4; c = -1;
Δ = b2-4ac
Δ = 42-4·6·(-1)
Δ = 40
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{40}=\sqrt{4*10}=\sqrt{4}*\sqrt{10}=2\sqrt{10}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-2\sqrt{10}}{2*6}=\frac{-4-2\sqrt{10}}{12}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+2\sqrt{10}}{2*6}=\frac{-4+2\sqrt{10}}{12}
$