The inequality is .

As the symbol is and , the solution lies on and above the -axis.

The related function is .

Solve the equation.

               (Related function)

              (Factor)

or        (Zero productive property)

or             (Simplify)

Graph:

Graph the parabola and the -intercept is at .

Observe the graph:

The graph lies on and above the -axis.

The solution set of the inequality is .

Check:

Test one value of -greater than and less than of the original inequality.

Case(i):

               (Original function)

    (Substitute )

         (Evaluate powers: )

               (Multiply)

                                 (Simplify)

Case(ii): 

               (Original function)

    (Substitute  )

         (Evaluate powers: )

               (Multiply)

                                 (Simplify)

Case(iii):

               (Original function)

          (Substitute )

                               (Simplify)

Solution set is .