College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter R - Section R.2 - Algebra Essentials - R.2 Assess Your Understanding - Page 28: 98



Work Step by Step

$-3x^{-1}y$ if x=2, and y = -1. Substitute the values: Remember that to make an exponent positive, take the reciprocal of its base and then apply the opposite of the previous exponent to the denominator. $-3(2)^{-1}*-1$ $-3*\frac{1}{2^{1}}*-1.$ Therefore, the answer is: $\frac{3}{2}$
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