Answer
$\{1,2,5,a\}$
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, $\{1,2,5\}\cup\{5,a\}=\{1,2,5,a\}$.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Test: 4
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
