0=0.001x^2-100

Solution for 0=0.001x^2-100 equation:

0=0.001x^2-100

We move all terms to the left:

0-(0.001x^2-100)=0

We add all the numbers together, and all the variables

-(0.001x^2-100)=0

We get rid of parentheses

-0.001x^2+100=0

a = -0.001; b = 0; c = +100;
Δ = b2-4ac
Δ = 02-4·(-0.001)·100
Δ = 0.4
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{0.4}}{2*-0.001}=\frac{0-\sqrt{0.4}}{-0.002}
=-\frac{\sqrt{}}{-0.002}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{0.4}}{2*-0.001}=\frac{0+\sqrt{0.4}}{-0.002}
=\frac{\sqrt{}}{-0.002}
$