The degree of the function is .

Determine the number of positive real zeros, negative real zeros, and imaginary zeros.

Observe the graph:

The graph crosses the –axis at .

Hence the zero of the function is which is a negative real root. \ \

Since the degree is function is , the function must have imaginary roots.

Therefore, the function has postive real roots, negative real root and imaginary roots.

The function has postive real roots, negative real root and imaginary roots.