-1x^2+5.76=0

Solution for -1x^2+5.76=0 equation:

-1x^2+5.76=0

a = -1; b = 0; c = +5.76;
Δ = b2-4ac
Δ = 02-4·(-1)·5.76
Δ = 23.04
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{-(0)-\sqrt{23.04}}{2*-1}=\frac{0-\sqrt{23.04}}{-2}
=-\frac{\sqrt{}}{-2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{23.04}}{2*-1}=\frac{0+\sqrt{23.04}}{-2}
=\frac{\sqrt{}}{-2}
$