36000=4x^2

Solution for 36000=4x^2 equation:

36000=4x^2

We move all terms to the left:

36000-(4x^2)=0

a = -4; b = 0; c = +36000;
Δ = b2-4ac
Δ = 02-4·(-4)·36000
Δ = 576000
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:

$\sqrt{\Delta}=\sqrt{576000}=\sqrt{57600*10}=\sqrt{57600}*\sqrt{10}=240\sqrt{10}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-240\sqrt{10}}{2*-4}=\frac{0-240\sqrt{10}}{-8}
=-\frac{240\sqrt{10}}{-8}
=-\frac{30\sqrt{10}}{-1}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+240\sqrt{10}}{2*-4}=\frac{0+240\sqrt{10}}{-8}
=\frac{240\sqrt{10}}{-8}
=\frac{30\sqrt{10}}{-1}
$