10=0.018268*v^2

Solution for 10=0.018268*v^2 equation:

10=0.018268v^2

We move all terms to the left:

10-(0.018268v^2)=0

We get rid of parentheses

-0.018268v^2+10=0

a = -0.018268; b = 0; c = +10;
Δ = b2-4ac
Δ = 02-4·(-0.018268)·10
Δ = 0.73072
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$v_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$v_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$v_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-\sqrt{0.73072}}{2*-0.018268}=\frac{0-\sqrt{0.73072}}{-0.036536}
=-\frac{\sqrt{}}{-0.036536}
$
$v_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{0.73072}}{2*-0.018268}=\frac{0+\sqrt{0.73072}}{-0.036536}
=\frac{\sqrt{}}{-0.036536}
$