The polynomial is and the factor is .

The binomial is a factor of polynomial.

Here is a zero of the realted polynomial function.

Use synthetic division to find remaining factor of the polynomial.

can be factored as .

The polynomial is the depressed polynomial.

                       (Factor the trinomial)

Hence, .

Check:

Multiply the factors and check whether it is intial polynomial or not.

                                      (Factors)

                               (Group the factors)

        (Foil method)

                             (Multiply)

                 (Distributive property: )

                     (Multiply)

                                       (Simplify)

.