Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.2 - Exponents and Radicals - 1.2 Exercises: 51


a)$3a\sqrt a+\sqrt a$ b)$4\sqrt x+x^2\sqrt x$

Work Step by Step

a)$\sqrt {9a^3}+\sqrt a=\sqrt {9a^2}\sqrt a+\sqrt a=3a\sqrt a+\sqrt a$ b)$\sqrt {16x}+\sqrt {x^5}=4\sqrt x+\sqrt {(x^2)^2}\sqrt x=4\sqrt x+x^2\sqrt x$
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