Answer
$\left\{-1.31, 1.98, 3.84\right\}$
Work Step by Step
By graphing the function we can state, that it is increasing periodically, therefore there is a finite number of solutions to it.
The solutions are the $x$-coordinates of the points along the $x$-axis (where $y=0$), which are:
$x\approx-1.31$
$x\approx1.98$
$x\approx3.84$
