Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 7 - Exponents and Exponential Functions - Chapter Review - Page 476: 31



Work Step by Step

You have the expression ($b^{-4}$$)^{x}$=$b^{20}$.You have to find the value of x: $b^{-4x}$=$b^{20}$ -multiply the exponents because you are raising a power to a power. -4x=20 -divide both sides by -4- x=-5 The expression would be ($b^{-4}$$)^{-5}$=$b^{20}$
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