1)(8-5i)*4i 2)(7-3i)*(7+3i) помогите срочно

Question

1)(8-5i)*4i
2)(7-3i)*(7+3i) помогите срочно

Answer 1

1) (8 - 5i) * 4i = 32i - 20i^2
2) (7 - 3i)*(7 + 3i) = 49 - 9i^2