The degree polynomial function and leading coefficient .

The polynomial function .

The degree of polynomial is even (n = 4) and leading coefficient is positive ().

Since the graph rises to the left and right.

The graph rises to the left and right.

To find the real zeros of the function, set f(x) equal to zero and solve for x.

The polynomial function .

                                   (Set f(x) equal to zero)

                               (Remove common monomial factor)

                     (Factor completely)

So, the real zeros are .

Since the x - intercepts occur at .

The real zeros are .