Elementary and Intermediate Algebra A Combined Approach
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F I F T H
E D I T I O N
Elementary and Intermediate Algebra A Combined Approach Jerome E. Kaufmann Karen L. Schwitters Seminole Community College
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Elementary and Intermediate Algebra: A Combined Approach, Fifth Edition Jerome E. Kaufmann, Karen L. Schwitters Mathematics Editor: Gary Whalen Development Editor: Kristin Marrs Assistant Editor: Laura Localio Editorial Assistant: Lynh Pham Technology Project Manager: Donna Kelley Marketing Manager: Greta Kleinert Marketing Assistant: Cassandra Cummings Marketing Communications Manager: Darlene Amidon-Brent Project Manager, Editorial Production: Hal Humphrey Art Director: Vernon Boes Print Buyer: Rebecca Cross
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Contents
Chapter 1
Some Basic Concepts of Arithmetic and Algebra 1 1.1 Numerical and Algebraic Expressions 2 1.2 Prime and Composite Numbers 10 1.3 Integers: Addition and Subtraction 17 1.4 Integers: Multiplication and Division 25 1.5 Use of Properties 31 Chapter 1 Summary 41 Chapter 1 Review Problem Set 41 Chapter 1 Test 44
Chapter 2
The Real Numbers
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2.1 Rat