Answer
$\color{blue}{\left\{0, 1\right\}}$
Work Step by Step
Factor out $4t$:
$$4t(t-1)=0$$
Use the Zero-Product Property by equating each factor to zero. Then, solve each equation to obtain:
\begin{align*}
4t&=0 &\text{or}& &t-1=0\\
t&=0 &\text{or}& &t=1\\
\end{align*}
Therefore, the solution set is $\color{blue}{\left\{0, 1\right\}}$.