x^2+105x+1300=0

Solution for x^2+105x+1300=0 equation:

x^2+105x+1300=0

a = 1; b = 105; c = +1300;
Δ = b2-4ac
Δ = 1052-4·1·1300
Δ = 5825
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:

$\sqrt{\Delta}=\sqrt{5825}=\sqrt{25*233}=\sqrt{25}*\sqrt{233}=5\sqrt{233}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(105)-5\sqrt{233}}{2*1}=\frac{-105-5\sqrt{233}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(105)+5\sqrt{233}}{2*1}=\frac{-105+5\sqrt{233}}{2}
$