x^2-13-300=0

Solution for x^2-13-300=0 equation:

x^2-13-300=0

We add all the numbers together, and all the variables

x^2-313=0

a = 1; b = 0; c = -313;
Δ = b2-4ac
Δ = 02-4·1·(-313)
Δ = 1252
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:

$\sqrt{\Delta}=\sqrt{1252}=\sqrt{4*313}=\sqrt{4}*\sqrt{313}=2\sqrt{313}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-2\sqrt{313}}{2*1}=\frac{0-2\sqrt{313}}{2}
=-\frac{2\sqrt{313}}{2}
=-\sqrt{313}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+2\sqrt{313}}{2*1}=\frac{0+2\sqrt{313}}{2}
=\frac{2\sqrt{313}}{2}
=\sqrt{313}
$