Question

1. Find the product: (4 + 6i)(7-2i)

a. 11 + 4i
b. 28 - 12i
c. 40 + 34i
d. 62 - 12i​

Answer 1

c

Explanation:

(4 + 6i)(7-2i)=

28-8i+42i-12i^2

i^2=-1, so

28+12-8i+42i

40+34i

answer is c