Respuesta :

USE M-A-T-H-WAY U CAN DO IT
navarrosank2008

18. (5+3i) + (2-2i)

8 + 0

Answer = 8

19. (8+9i) + (5-9i) - (8-7)

17 + -4 - 1

- - = +

:. -4 + 1 = -3

17 - - 3

Answer = 20

20. (6+8i)(3-2i)

14 × 1

Answer = 14