Question

Melissa and Tomas are playing a game with complex numbers. If Melissa has a score of 5 – 4i and Tomas has a score of 3 + 2i, what is their total score?
8 – 6i
8 + 6i
8 – 2i
8 + 2i

Answer 1

To answer this question, you must put like-terms together,
since you can't subtract 5 with -4i or add 3i to 5

Right now the question is asking (5 - 4i) + (3 + 2i)
So you must use commutative property to get (5 + 3) + (2i - 4i)

So then your answer is...

8 - 2i, the third one

Answer 2

5 - 4i + 3 + 2i

5 + 3 + 2i - 4i

8 - 2i