Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 11 - Additional Topics - 11.4 - Complex Numbers - Concept Quiz 11.4 - Page 493: 9



Work Step by Step

There are many cases where the product of two complex numbers is a real number. For example, $(1+i)(1-i)=1(1)+i-i-i^2=1-i^2=1-(-1)=1+1=2$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.