Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley
ISBN 10: 1118583191
ISBN 13: 978-1-11858-319-7

Chapter 11 - Polynomial and Rational Functions - Exercises to Skills Review for Chapter 11 - Page 494: 13



Work Step by Step

Rewrite the fractions to get a common denominator. $$\frac{4z}{x^2y}-\frac{3w}{xy^4}=\frac{4y^3z}{x^2y^4}-\frac{3wx}{x^2y^4}$$ Since the fractions, have the same denominator, they can be added to get $\frac{4y^3z-3wx}{x^2y^4}$
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