## College Algebra (10th Edition)

Published by Pearson

# Chapter 1 - Section 1.3 - Complex Numbers; Quadratic Equations in the Complex Number System - 1.3 Assess Your Understanding: 6

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#### Work Step by Step

RECALL: In the complex number $a+bi$, $a$ is the real number part while $bi$ is the imaginary number part. Note that when $b=0$, the complex number $a+bi$ becomes $a+oi=a$, which is a real number. . This means that the set of real numbers is a subset of the set of complex numbers. Thus, the given statement is true.

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