Answer
Solution set = $\{-1.3916,\ 1.6856\}$ (correct to 3 decimal places)
Work Step by Step
Graph the LHS function and the RHS function in the same window.
Use TRACE, INTERSECT, or a similar function of your graphing device to find the intersection points.
The solution set consists of the x-coordinates of the intersection points.
The initial viewing window gives intersections at $ x=-1.392$ and at $ x=1.686$, and LHS=RHS is correct to 2 decimal places.
Zooming in, we can refine to better precision, $ x=-1.3916$ and $ x=1.6856$, and LHS=RHS is correct to three decimal places.
Solution set = $\{-1.3916,\ 1.6856\}$ (correct to 3 decimal places)
