## 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 college kids. utilizing daily language and many examples, Kaufman and Schwitters allow you to follow algebra options and ace the attempt. This quantity additionally comes with Interactive Skillbuilder CD-ROM. This application is jam-packed with over eight hours of video guide to aid all of it make feel. Plus, you will get the strong web-based iLrn Homework software that makes your assignments a breeze. Get the grade you would like with ALGEBRA for students.

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Extra resources for Algebra for College Students , Eighth Edition

Sample text

14 35. 9) 36. 8) 67. (Ϫ6)(Ϫ9) ϩ (Ϫ7)(4) 37. 2) 38. 3) 68. 2 Ϫ6 40. 7 3 1 41. aϪ b ϩ aϪ b 3 4 42. Ϫ 3 3 43. Ϫ Ϫ aϪ b 2 4 5 11 44. Ϫ 8 12 45. Ϫ 2 7 Ϫ 3 9 3 4 47. aϪ b a b 4 5 46. 5 3 ϩ 6 8 5 2 Ϫ aϪ b 6 9 4 1 48. a b aϪ b 2 5 4 1 3 62. Ϫ Ϫ aϪ b 5 2 5 63. Ϫ5 ϩ (Ϫ2)(7) Ϫ (Ϫ3)(8) 25. 0 Ϭ (Ϫ14) 39. 5 7 50. aϪ b Ϭ aϪ b 6 8 64. Ϫ9 Ϫ 4(Ϫ2) ϩ (Ϫ7)(6) 65. 2 3 1 3 aϪ b Ϫ aϪ b a b 5 4 2 5 2 1 1 5 66. Ϫ a b ϩ aϪ b a b 3 4 3 4 69. 3(5 Ϫ 9) Ϫ 3(Ϫ6) 70. 7(8 Ϫ 9) ϩ (Ϫ6)(4) 71. (6 Ϫ 11)(4 Ϫ 9) 72. (7 Ϫ 12)(Ϫ3 Ϫ 2) 73.

2) The absolute value of a real number a is deﬁned as follows: 1. If a Ն 0, then 0 a 0 ϭ a. 2. If a Ͻ 0, then 0 a 0 ϭ Ϫa. ■ Operations with Real Numbers Addition 1. The sum of two positive real numbers is the sum of their absolute values. 2. The sum of two negative real numbers is the opposite of the sum of their absolute values. 3. The sum of one positive and one negative number is found as follows: a. If the positive number has the larger absolute value, then the sum is the difference of their absolute values when the smaller absolute value is subtracted from the larger absolute value.

THOUGHTS INTO WORDS 101. Explain the difference between simplifying a numerical expression and evaluating an algebraic expression. student wrote 8 ϩ x. Are both expressions correct? Explain your answer. 102. How would you help someone who is having difﬁculty expressing n nickels and d dimes in terms of cents? 104. When asked to write an algebraic expression for “6 less than a number,” you wrote x Ϫ 6 and another student wrote 6 Ϫ x. Are both expressions correct? Explain your answer. 103. 1) A set is a collection of objects; the objects are called elements or members of the set.