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.

Since the remainder is zero, is a factor of polynomial.

The polynomial can be factores as .

The polynomial is the depressed polynomial.

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)

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