College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter P - Prerequisites: Fundamental Concepts of Algebra - Concept and Vocabulary Check: 4



Work Step by Step

The question is asking for the union of two sets, in other words it is asking you to find a set that will contain all the elements of one set and all the elements from the other set, without duplicates. If set A contains {$3,4,5,6,7$} and set B contains {$3,7,8,9$} and you are to find the union of set A and B, the answer would be {$3,4,5,6,7,8,9$}. All the elements of this set are either part of A or B or both (notice how 3 is an element they both have in common, but in the unified set it is written only once).
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