Answer :
Answer:
A
Step-by-step explanation:
Remember to combine like terms, aka whichever number has the same variable (or no variable), those are the ones that go together. 5 + 10 is 15. -3i + 5i is the same as 5i -3i, which is 2i.
Answer:
A. 15 + 2i
Step-by-step explanation:
(5 - 3i) + (10 + 5i)
5 - 3i + 10 + 5i
5 + 10 - 3i + 5i
15 + 2i
hope it helps!