Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Test: 4



Work Step by Step

Recall that the union of two sets is the set of all elements that are contained in either of the sets. Thus, $\{1,2,5\}\cup\{5,a\}=\{1,2,5,a\}$.
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