Question

For each item, find the product of the complex number and its complex conjugate. Show your work.

(a) 10-14i
(b)-5-12i
(c) 8+3i
(d) - 9-5i

Answer 1

114

Explanation:

Here is the first one.....you should be able to do the others

(10-14i)(10+ 14i) expand

100 + 140i - 140i - 14i^2

100 - 14i^2 remember i = sqrt (-1) so i^2 = -1

100 - (14 *-1)

114