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 492: 4



Work Step by Step

Since complex numbers are written in the form $a+bi$, where $a$ is the real part and $bi$ is the imaginary part, if $a$ is $0$, that leaves us with $bi$, which is purely an imaginary number.
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