Answer
$\frac{19}{2}\sqrt 5$
Work Step by Step
$-\frac{1}{2}\sqrt 5+2\sqrt 125$
$=-\frac{1}{2}\sqrt 5+2.5\sqrt 5$
$=\sqrt 5(-\frac{1}{2}+10)$
$=\frac{19}{2}\sqrt 5$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 10 - Radical Expressions and Equations - 10-3 Operations With Radical Expressions - Practice and Problem-Solving Exercises - Page 629: 19
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