Select the correct answer from the choices given
(13 + 4i) + n = 0
what is n?

a. 0

b. 1

c. –13 + 4i

d. –13 - 4i

In equating a complex number to 0, we must add an opposite form of the equation, where the values of the real and imaginary parts are the same as the original, but have opposing signs. In the case of (13 + 4i), we have to add (-13 - 4i) to equate it to 0. Among the choices, the correct answer is D.

The correct graph is the second one, with the points being at (-6,0), (2,0) and reaching down to (-2,-8)