Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Prerequisites - P.2 - Exponents and Radicals - Exercises - Page 24: 16



Work Step by Step

Given: $x=4$ Need to solve $7x^{-2}$ By using quotient property it can be re-written as: $7x^{-2}=\dfrac{7}{x^2}$ Plug the value of $x=4$ in $\dfrac{7}{x^2}$ $\dfrac{7}{x^2}=\dfrac{7}{(4)^2}=\dfrac{7}{16}$
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