Answer
$ x \geq -2$
Work Step by Step
You can not take the square root of a negative number. Therefore, $x + 2$ must be greater than or equal to 0.
$ x + 2 \geq 0$
We subtract 2 from both sides
$ x + 2 - 2 \geq 0 - 2$
$ x \geq -2$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 10 - Radical Expressions and Equations - 10-5 Graphing Square Root Functions - Practice and Problem-Solving Exercises - Page 629: 11
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