College Algebra (6th Edition)

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

Chapter 2 - Functions and Graphs - Exercise Set 2.6 - Page 297: 18



Work Step by Step

Making $x=$ anything less than $-2$ will result in a negative number, and a square root cannot be negative without being imaginary. Therefore, the domain excludes all numbers before $-2$. $f(x)=\sqrt {x+2}$ $[-2,∞)$
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