0=8x2-800

Solution for 0=8x2-800 equation:

0=8x^2-800

We move all terms to the left:

0-(8x^2-800)=0

We add all the numbers together, and all the variables

-(8x^2-800)=0

We get rid of parentheses

-8x^2+800=0

a = -8; b = 0; c = +800;
Δ = b2-4ac
Δ = 02-4·(-8)·800
Δ = 25600
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{25600}=160$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-160}{2*-8}=\frac{-160}{-16}
=+10
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+160}{2*-8}=\frac{160}{-16}
=-10
$