X^2-63x-130=0

Solution for X^2-63x-130=0 equation:

X^2-63X-130=0

a = 1; b = -63; c = -130;
Δ = b2-4ac
Δ = -632-4·1·(-130)
Δ = 4489
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{4489}=67$
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-63)-67}{2*1}=\frac{-4}{2}
=-2
$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-63)+67}{2*1}=\frac{130}{2}
=65
$