Question

What is correct answers?​

Answer 1

C) -18-10i

Explanation:

We are asked to find the sum of (3-4i) and (-21-6i)

Write an equation:

(3-4i)+(-21-6i)

rearrange terms

(3-21)+(-4i-6i)

combine like terms

-18+-10i

simplify

-18-10i

Hope this helps! :)