Answer
$x^{2}-2x\sqrt 5+5$
Work Step by Step
$(\sqrt 5-x)^{2}$
=$(\sqrt 5-x)(\sqrt 5-x)$
=$\sqrt 5(\sqrt 5-x)-x(\sqrt 5-x)$
=$\sqrt 5\sqrt 5-x\sqrt 5-x\sqrt 5+x^{2}$
=$5-2x\sqrt 5+x^{2}$
=$x^{2}-2x\sqrt 5+5$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 8 - Cumulative Review - Page 534: 42b
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