Question

What is the product of the complex numbers below? (3-2i) (1 + 7i)​

Answer 1

17 + 19i

Explanation:

i = √-1

(3 - 2i) (1 + 7i)

= 3(1) + 3(7i) - 1(2i) - (2X7)(i²)

= 3 + 21i - 2i - 14(√-1)²

= 3 + 19i - 14 (-1)

= 3 + 19i + 14

= 17 + 19i