0.36=0.5(x^2)

Solution for 0.36=0.5(x^2) equation:

0.36=0.5(x^2)

We move all terms to the left:

0.36-(0.5(x^2))=0

We get rid of parentheses

-0.5x^2+0.36=0

a = -0.5; b = 0; c = +0.36;
Δ = b2-4ac
Δ = 02-4·(-0.5)·0.36
Δ = 0.72
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{0.72}}{2*-0.5}=\frac{0-\sqrt{0.72}}{-1}
=-\frac{\sqrt{}}{-1}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{0.72}}{2*-0.5}=\frac{0+\sqrt{0.72}}{-1}
=\frac{\sqrt{}}{-1}
$