Answer
$(-\infty,-2)\cup(0,2)$ $f$ is decreasing
$(-2,0)\cup (2,\infty)$ $f$ is increasing
Work Step by Step
We are given the function:
$f(x)=(x^2-4)^2$
Graph the function:
Determine the intervals on which $f$ is increasing, decreasing or is constant:
On $(-\infty,-2)\cup(0,2)$ $f$ is decreasing.
On $(-2,0)\cup (2,\infty)$ $f$ is increasing.
