find the x-values where

plot these two x-values on a number line ... the two plotted solutions break up the number line into three intervals.

pick a single value in each interval and "test" it to see if that value makes the original inequality true or false ... if true, then all values in that interval make the inequality true and are part of the solution set.

if the chosen value from the interval makes the original inequality false, then exclude that interval of values from the solution set.