3x+4=22/x

Solution for 3x+4=22/x equation:

3x+4=22/x

We move all terms to the left:

3x+4-(22/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

3x-(+22/x)+4=0

We get rid of parentheses

3x-22/x+4=0

We multiply all the terms by the denominator


3x*x+4*x-22=0

We add all the numbers together, and all the variables

4x+3x*x-22=0

Wy multiply elements

3x^2+4x-22=0

a = 3; b = 4; c = -22;
Δ = b2-4ac
Δ = 42-4·3·(-22)
Δ = 280
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:

$\sqrt{\Delta}=\sqrt{280}=\sqrt{4*70}=\sqrt{4}*\sqrt{70}=2\sqrt{70}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-2\sqrt{70}}{2*3}=\frac{-4-2\sqrt{70}}{6}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+2\sqrt{70}}{2*3}=\frac{-4+2\sqrt{70}}{6}
$