x2-18x-576=0

Solution for x2-18x-576=0 equation:

x2-18x-576=0

We add all the numbers together, and all the variables

x^2-18x-576=0

a = 1; b = -18; c = -576;
Δ = b2-4ac
Δ = -182-4·1·(-576)
Δ = 2628
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:

$\sqrt{\Delta}=\sqrt{2628}=\sqrt{36*73}=\sqrt{36}*\sqrt{73}=6\sqrt{73}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-18)-6\sqrt{73}}{2*1}=\frac{18-6\sqrt{73}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-18)+6\sqrt{73}}{2*1}=\frac{18+6\sqrt{73}}{2}
$