Question

If a cubic polynomial has zeros at x= -4, x=0 and x=7, then

A). The polynomial has no imaginary zeros.

B). The polynomial as a pair of imaginary zeros.

Answer 1

A

Explanation:

The Fundamental theorem of algebra tells us that a polynomial of degree n has n roots.

Here the polynomial is a cubic, that is of degree 3

Thus it will have 3 roots, real and/ or imaginary.

Since imaginary roots occur in conjugate pairs

Since the polynomial has 3 real roots there are no imaginary roots, thus

A is the required response.

Answer 2

I think the answer ia A that what i think