Answer
$x=15$ and $x=-2$
Work Step by Step
Factor the trinomial:
\begin{align*}
(x-15)(x+2)&=0
\end{align*}
Use the Zero-Product Property by equating each factor with a variable to zero, then solve each equation:
\begin{align*}
x-15&=0 &\text{or}& &x+2=0\\\\
x&=15 &\text{or}& &x=-2\\\\
\end{align*}
