"So what would (3 - 5i) + (4 + 2i) equal?" asked Betty.
"Why, 7 - 3i, of course," responded John.
"But what about (4-3i) 
(2+5i) ?"
"Well by expanding out the brackets,"
(4-3i)
(2+5i) = 4 2
+ 4 5i
- 3i 2
- 3i 5i
= 8 + 20i - 6i -15= 23 + 14i
said Betty, pretty excited about their new game.
