#### Answer

$2x-25$

#### Work Step by Step

$(\sqrt {2x}+5)(\sqrt {2x}-5)$
=$(\sqrt {2x})^{2}-(5)^{2}$
=$({2x})^{2\times\frac{1}{2}}-(5)^{2}$
=$2x-25$

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

$2x-25$

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