## Precalculus (6th Edition) Blitzer

Published by Pearson

# Chapter 1 - Section 1.7 - Combinations of Functions; Composite Functions - Exercise Set: 18

#### Answer

$[-2, +\infty)$

#### Work Step by Step

The radicand (expression inside a radical) of a square root cannot be negative as its root is an imaginary number. Thus, the value of $x$ can be any real number that is greater than or equal to $-2$. Therefore, the domain of the given function is $[-2, +\infty)$.

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