The polynomial is .

Find the factors.

                              (Original equation)

       (Subtract from each side)

                                           (Apply additive inverse property: )

                                        (Write in the form )

Difference of the squares:

and                              (Apply zero productive property)

Solution are or .

Check solution for -values.

Case (i):

                              (Original equation)

                         (Substitute )

                                  (Evaluate powers: )

                                        (Add: )

Case(ii):

                                (Original equation)

                              (Substitute )

                                  (Evaluate powers: )

                                        (Add: )

Solution are or .