How do you solve 3y^2-108y=0?

$\textcolor{g r e e n}{y = 0} \mathmr{and} \textcolor{g r e e n}{y = 36}$
$\textcolor{w h i t e}{\text{XXX}} \left(3\right) \cdot \left(y\right) \cdot \left(y - 36\right) = 0$
$\Rightarrow y = 0 \text{ or } y = 36$