Respuesta :
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
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