Answer:
8 -2i
Step-by-step explanation:
For purposes of addition and subtraction, "i" can be treated in the same way any variable would be. Like terms are added in the usual way.
... (5 -4i) + (3 +2i) = (5 +3) +(-4 +2)i = 8 -2i
Their total score is 8 - 2i.