x^2+10.8x-63=0

Solution for x^2+10.8x-63=0 equation:

x^2+10.8x-63=0

a = 1; b = 10.8; c = -63;
Δ = b2-4ac
Δ = 10.82-4·1·(-63)
Δ = 368.64
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(10.8)-\sqrt{368.64}}{2*1}=\frac{-10.8-\sqrt{368.64}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(10.8)+\sqrt{368.64}}{2*1}=\frac{-10.8+\sqrt{368.64}}{2}
$