## Algebra: A Combined Approach (4th Edition)

Published by Pearson

# Chapter 10 - Section 10.7 - Complex Numbers - Vocabulary and Readiness Check - Page 739: 6

imaginary

#### Work Step by Step

In a complex number of the form $a+bi$, both $a$ and $b$ are real numbers. Since $a=0$ makes the real part of the complex number zero, all that remains is the imaginary part $bi$. When $a$ becomes zero, this imaginary part is known as an imaginary number.

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