Prealgebra (7th Edition)

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

Appendix B - Exercise Set: 64

Answer

$\frac{1}{y^{12}}$

Work Step by Step

Use the product rule and the definition of negative exponents. $y^{-9}\times y^6\times y^{-9}=y^{-9+6+(-9)}=y^{-12}=\frac{1}{y^{12}}$
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