Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 10 - Section 10.2 - Rational Exponents - Exercise Set - Page 695: 100

Answer

Both exponents are negative, and we know we can write $x^{-y}$ as $1/(x^y)$ as long as $y\ne0$. Thus, $2x^{-5}$ is the same as $2/x^5$.

Work Step by Step

Also, $2x^{-3/4}$ can be written as $2/(x^{3/4})$.
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