Answer
All the real numbers except $2$ and $-2$.
Work Step by Step
We must exclude the values for which the denominator is $0$, thus $x\ne2$ and $x\ne-2$. Thus the domain is all the real numbers except $2$ and $-2$.
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 2 - Mid-Chapter Check Point - Page 135: 14
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