-x^2+3600=0

Solution for -x^2+3600=0 equation:

-x^2+3600=0

We add all the numbers together, and all the variables

-1x^2+3600=0

a = -1; b = 0; c = +3600;
Δ = b2-4ac
Δ = 02-4·(-1)·3600
Δ = 14400
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{14400}=120$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-120}{2*-1}=\frac{-120}{-2}
=+60
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+120}{2*-1}=\frac{120}{-2}
=-60
$