Question

Select the correct answer.

Write (3 + 4i) + (8 + 2i) as a complex number in standard form.

A.
5 + 12i
B.
7 + 10i
C.
11 + 6i
D.
11 − 6i

Answer 1

C

Explanation:

given (3 + 4i) + (8 +2i)

Collect real parts and imaginary parts as like terms

= 3 + 4i + 8 + 2i

= (3 + 8) + (4i + 2i) = 11 + 6i → C

Answer 2

C. 11 + 6i

Explanation:

(3 + 4i) + (8 + 2i)

Add the real parts

3+8 = 11

Add the imaginary parts

4i+2i = 6i

The complex number is

11 +6i