Multiply each of the following complex numbers.
1. (2 + 3i) * (7 - 5i) =
29 + 11i 14 - 2i 19 + 11i
2. (3 - 5i) * (2 + 1i) = 11 - 7i 1 - 7i 11 + 7i
3. ( a - bi) * (c - di) (ac + bd) - (ad + bc)i (ac - bd) - (ad - bc)i (ac - bd) - (ad + bc)i
4. (5 - 2i) * (9 + i) 45 - 13i 63 + 13i 63 - 13i
5. (2 - 4i) * (3 + 7i)
-22 + 2i 34 - 2i 34 + 2i
6. (8 - 2i) * (8 + 2i).
68 64 - 32i 68 - 32i
Copyright © 2005 Donna Tupper.
