Question

Help ASAP!!

What is the product (result of multiplication) of (3 - 7i) and (2 + 8i) in proper a+bi format.

Answer 1

62 + 10i

Explanation:

note that i² = - 1

given

(3 - 7i)(2 + 8i) ← expand factors using FOIL

= 6 + 24i - 14i - 56i²

= 6 + 10i - 56(- 1)

= 6 + 10i + 56

= 62 + 10i