Discrete Mathematics and Its Applications, Seventh Edition

Published by McGraw-Hill Education
ISBN 10: 0073383090
ISBN 13: 978-0-07338-309-5

Chapter 2 - Section 2.2 - Set Operations - Exercises - Page 137: 36

Answer

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Work Step by Step

This is just a restatement of the definition. In A-B there are the elements that are in set A but not in set B, in similar B-A have all the elements of B that are not in A, so when union is applied on set A-B and set B-A the result have all the elements of set A and set B except those of common elements of both A and B.
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