Question

Add the following complex numbers:

(5 - 3i) + (10 + 5i)

A. 15 + 2i
B. -5 + 8i
C. -5 + 2i
D. 15 + 8i​

Answer 1

A. 15 + 2i

Explanation:

(5 - 3i) + (10 + 5i)

5 - 3i + 10 + 5i

5 + 10 - 3i + 5i

15 + 2i

hope it helps!

Answer 2

A

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.