Answer
$\{x|x\neq 5\}$.
Work Step by Step
The given expression is
$=\frac{4}{x-5}$
If $x=5$, the denominator becomes $0$, which is not defined.
Hence, the domain is $\{x|x\neq 5\}$.
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Appendix A - Review - A.1 Algebra Essentials - A.1 Assess Your Understanding - Page A12: 77
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