Answer
The solutions are $w=0$ and $w=6$.
Work Step by Step
Given: $w(w-6)^{2}=0$
$\implies w(w-6)(w-6)=0$
Using zero-product property, we have
$w=0$ or $w-6=0$
Solving for $w$, we obtain
$w=0$ or $w=6$.
The roots are $w=0$ and $w=6$.