Answer
$\frac{y^{10}}{9x^8}$
Work Step by Step
$(3x^4y^{-5})^{-2}=3^{-2}(x^4)^{-2}(y^{-5})^{-2}=\frac{1}{9}x^{-8}y^{10}=\frac{y^{10}}{9x^8}$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 2 - Cumulative Review Exercises - Page 176: 11
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