## Precalculus (6th Edition) Blitzer

$x=-6$ and $x=2$
$f(x)$ represents the value of the function $f$ at $x$. Note that the graph passes through the points $(-6, 0)$ and $(2, 0)$. Thus, $f(-6) = 0$ and $f(2) = 0$. Therefore. the values of $x$ for which $f(x)=0$ are -6 and 2.