1/2x+2=5x

Solution for 1/2x+2=5x equation:

1/2x+2=5x

We move all terms to the left:

1/2x+2-(5x)=0


Domain of the equation: 2x!=0

x!=0/2

x!=0

x∈R


We add all the numbers together, and all the variables

-5x+1/2x+2=0

We multiply all the terms by the denominator


-5x*2x+2*2x+1=0

Wy multiply elements

-10x^2+4x+1=0

a = -10; b = 4; c = +1;
Δ = b2-4ac
Δ = 42-4·(-10)·1
Δ = 56
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:

$\sqrt{\Delta}=\sqrt{56}=\sqrt{4*14}=\sqrt{4}*\sqrt{14}=2\sqrt{14}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-2\sqrt{14}}{2*-10}=\frac{-4-2\sqrt{14}}{-20}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+2\sqrt{14}}{2*-10}=\frac{-4+2\sqrt{14}}{-20}
$