College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 1, Equations and Graphs - Section 1.5 - Complex Numbers - 1.5 Exercises - Page 130: 3


(a) 3-4i (b) 25

Work Step by Step

(a) The complex conjugate of $3+4i$ is $\overline{3+4i}$=___$3-4i$___. (b) $(3+4i)(\overline{3+4i})$=___$3^{2}+4^{2}=9+16=25$___.
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