Answer:
C. You have to multiply both powers to simplify.
Answer:
Answer: <u> </u><u> </u><u>3</u><u> </u><u>+</u><u> </u><u>1</u><u>0</u><u>i</u><u> </u>
Step-by-step explanation:

The picture below is the answer to your question. I solved it myself when I was doing my homework.