College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter R - Section R.6 - Rational Exponents - R.6 Exercises - Page 56: 27

Answer

$-4r^6$

Work Step by Step

Apply the property of exponents given by: $(a^m)^{n}=a^{mn}$ $-4r^{-2}(r^4)^{2}=-4r^{-2}r^8$ Add the exponents of r and simplify. $-4r^{-2}(r^4)^{2}=-4r^{-2+8}=-4r^6$
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