Question

Simplify the given expression:

(1 + 3i) + (2 − 5i)

My answer was 3+8i which is obviously incorrect...

Answer 1

The options are
−1 − 2i

3 − 2i

4 − 3i

5 + 6i

Answer 2

3-2i

Answer 3

Thanks, would you mind writing out how you did that? I'd like to know for future reference

Answer 4

Well, 1 and 2 are common variables and 3i and 5i are common variables too. But you would need to add 1 and 2 and subtract 3i and 5i because the subtract symbol is attached to the 5 meaning it would look like 3i-5i.