5x^2=2x+130

Solution for 5x^2=2x+130 equation:

5x^2=2x+130

We move all terms to the left:

5x^2-(2x+130)=0

We get rid of parentheses

5x^2-2x-130=0

a = 5; b = -2; c = -130;
Δ = b2-4ac
Δ = -22-4·5·(-130)
Δ = 2604
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:

$\sqrt{\Delta}=\sqrt{2604}=\sqrt{4*651}=\sqrt{4}*\sqrt{651}=2\sqrt{651}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-2)-2\sqrt{651}}{2*5}=\frac{2-2\sqrt{651}}{10}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-2)+2\sqrt{651}}{2*5}=\frac{2+2\sqrt{651}}{10}
$