Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 2 - Set Theory - 2.4 Set Operations and Venn Diagrams with Three Sets - Concept and Vocabulary Check - Page 91: 1

Answer

"inside parentheses"

Work Step by Step

In order to perform set operations such as $(A \cup B) \cap (A \cup C)$, begin by performing any set operations inside parentheses. This is a universal rule in mathematics, and it ensures we don't do operations in the wrong order and get the wrong result.
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