x^2+60x-15000=0

Solution for x^2+60x-15000=0 equation:

x^2+60x-15000=0

a = 1; b = 60; c = -15000;
Δ = b2-4ac
Δ = 602-4·1·(-15000)
Δ = 63600
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:

$\sqrt{\Delta}=\sqrt{63600}=\sqrt{400*159}=\sqrt{400}*\sqrt{159}=20\sqrt{159}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(60)-20\sqrt{159}}{2*1}=\frac{-60-20\sqrt{159}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(60)+20\sqrt{159}}{2*1}=\frac{-60+20\sqrt{159}}{2}
$