Question

Select the correct answer.

Write (9 + 6i) − (1 + 3i) as a complex number in standard form.

A.
10 + 9i

B.
8 − 3i

C.
8 + 3i

D.
7 − 12i

Answer 1

C. 8 + 3i

Explanation:

(9 + 6i) - (1 + 3i) = 9 + 6i - 1 - 3i = (9 - 1) + (6i - 3i) = 8 + 3i