Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 1 - 1.5 - Complex Numbers - 1.5 Exercises - Page 120: 89



Work Step by Step

$(a+bi)+(s+ti)=(a+s)+(b+t)i$ $(a+s)+(b+t)i$ is a real number if $b+t=0$, that is, if $b=-t$. But in most cases, this does not happen.
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