Answer
Absolute maximum at $x=0.$
Absolute minimum at $x=-2$ and $x=2.$
Work Step by Step
The graph of $f$ contains points $(x,f(x)).$
The point (0,2) has a higher y-coordinate than any other point on the graph.
$f$ has an absolute maximum at $x=0.$
Points ($-2,0$) and ($2,0$) have a y-coordinate
that is less than or equal to any other y-coordinate on the graph.
Thus, there is an absolute minimum at $x=-2$ and $x=2.$
