Answer:
8
Step-by-step explanation:
The conjugate of - 2 + 2i is - 2 - 2i, hence
(- 2 + 2i)(- 2 - 2i) ← expand factors using FOIL
= 4 + 4i - 4i - 4i² [ note i² = - 1 ]
= 4 + 4
= 8
