Question

A polynomial equation has the root 4 - 7i. Find an additional root.

A. -4 + 7
B. -4 - 7
C. 4 - 71
D. 4 + 7i

Answer 1

The additional root of the polynomial equation with the root 4 - 7i is 4 + 7i.

Step-by-step explanation:

To find an additional root of the polynomial equation with the root 4 - 7i, we need to find its conjugate. The conjugate of 4 - 7i is 4 + 7i, so the additional root is D. 4 + 7i.