Answer
$\sqrt p-2$
Work Step by Step
Multiply $\frac{\sqrt p-2}{\sqrt p-2}$ to the expression, we have:
$\frac{p-4}{\sqrt p+2}\cdot \frac{\sqrt p-2}{\sqrt p-2}=\frac{(p-4)(\sqrt p-2)}{p-4}=\sqrt p-2$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter R - Review of Basic Concepts - R.7 Radical Expressions - R.7 Exercises - Page 76: 105
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