Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Appendix B - Exercise Set: 63

Answer

$\frac{1}{x^9}$

Work Step by Step

Use the product rule and the definition of negative exponents. $x^{-7}\times x^5\times x^{-7}=x^{-7+5+(-7)}=x^{-9}=\frac{1}{x^9}$
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