Algebra for College Students , Eighth Edition by Jerome E. Kaufmann, Karen L. Schwitters

By Jerome E. Kaufmann, Karen L. Schwitters

Make math a snap with ALGEBRA for students. utilizing daily language and plenty of examples, Kaufman and Schwitters assist you to practice algebra strategies and ace the try. This quantity additionally comes with Interactive Skillbuilder CD-ROM. This application is filled with over eight hours of video guide to assist all of it make feel. Plus, you will get the robust web-based iLrn Homework software that makes your assignments a breeze. Get the grade you wish with ALGEBRA for students.

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Sample text

In practice, however, the key is to remember that the product of two positive or two negative numbers is positive and that the product of a positive number and a negative number (either order) is negative. 18 Chapter 1 Basic Concepts and Properties ■ Dividing Real Numbers The relationship between multiplication and division provides the basis for dividing real numbers. For example, we know that 8 Ϭ 2 ϭ 4 because 2 ؒ 4 ϭ 8. In other words, the quotient of two numbers can be found by looking at a related multiplication problem.

4) Algebraic expressions such as 2x, 8xy, 3xy2, Ϫ4a2b3c, and z are called terms. A term is an indicated product and may have any number of factors. We call the variables in a term the literal factors, and we call the numerical factor the numerical coefficient. Terms that have the same literal factors are called similar or like terms. The distributive property in the form ba ϩ ca ϭ (b ϩ c)a serves as the basis for combining similar terms. For example, 3x2y ϩ 7x2y ϭ 13 ϩ 72x 2y ϭ 10x2y To translate English phrases into algebraic expressions, we must be familiar with the key phrases that signal whether we are to find a sum, difference, product, or quotient.

How much money, in cents, does he have in his bank? 95. Mila’s monthly salary is d dollars. What is her annual salary? 89. Tina has c cents, which is all in quarters. How many quarters does she have? 90. If n represents a whole number, what represents the next larger whole number? 91. If n represents an odd integer, what represents the next larger odd integer? 92. If n represents an even integer, what represents the next larger even integer? 93. The cost of a 5-pound box of candy is c cents. What is the price per pound?

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