Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 10 - Radical Expressions and Equations - 10-2 Simplifying Radicals - Practice and Problem-Solving Exercises - Page 623: 31


$-126a\sqrt a$

Work Step by Step

We are given: $-9\sqrt 28a^2 . \frac{1}{3}\sqrt 63a$ $=-9\sqrt 7.\sqrt 4a^2.\frac{1}{3}\sqrt 9.\sqrt 7.\sqrt a$ $=-9(\sqrt 7)^2.2a.\frac{1}{3}.3$ $=-126a\sqrt a$
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