Answer
$41$
Work Step by Step
Use complex arithmetic rule
$(a+bi)(a-bi)=a^2+b^2$
$a=4$
$b=5$
$=4^2+5^2$
Doing work within the parenthesis leaves us with
$41$
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 8 - Section 8.1 - Complex Numbers - 8.1 Problem Set - Page 426: 61
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.
