The inequality is .

Step 1:

Solve the quadratic equation

                             (Related function)

                       (Subtract from each side)

                 (Factor)

or           (Zero productive property)

or                   (Simplify)

Step 2:

Plot and on a number line.

Observe the graph:

The number line divide into three intervals.

Step 3: Test a value from each interval of the original inequality.

Case(i):

                            (Original function)

                  (Substitute )

                         (Evaluate powers:  )

                              (Multiply)

                                  (Simplify)

Case(ii):

                             (Original function)

                        (Substitute )

                                    (Simplify)

Case(iii):

                           (Original function)

                      (Substitute )

                          (Evaluate powers: )

                                (Simplify)

Hence, the Solution set is .

It is shown on the number line.

Solution set is .