By Margaret L. Lial
Is there whatever extra attractive than an “A” in Algebra? to not the Lial staff! Marge Lial, John Hornsby, and Terry McGinnis write their textbooks and accompanying assets with one objective in brain: giving scholars the entire instruments they should be successful. With this revision, the Lial crew has additional sophisticated the presentation and workouts during the textual content. they give a number of interesting new assets for college students that would supply additional support while wanted, whatever the studying atmosphere (classroom, lab, hybrid, on-line, etc)–new examine abilities actions within the textual content, an accelerated video software on hand in MyMathLab and at the Video assets on DVD, and extra!
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Extra resources for Algebra for College Students, 7th Edition
The child’s appearance is changed, but his or her identity is unchanged. EXAMPLE 2 Using the Identity Property 1 # a؍a Simplify each expression. (a) 12m + m = 12m + 1m = 112 + 12m = 13m Identity property; m = 1 Distributive property Add inside parentheses. (b) y + y = 1y + 1y NOW TRY ANSWERS 1. (a) - 6x + 2y (b) - 8k = 11 + 12y = 2y Identity property Distributive property Add inside parentheses. # m, or 1m 34 CHAPTER 1 Review of the Real Number System NOW TRY EXERCISE 2 - 1m - 5n2 (c) Simplify each expression.
A) - ͙144 (b) 100 B 9 (c) ͙ - 144 Finding Square Roots Find each square root that is a real number. (a) ͙ 36 = 6, since 6 is positive and 62 = 36. (b) ͙0 = 0, since 0 2 = 0. (c) 3 2 9 3 9 . 16. (e) ͙100 = 10, since 10 2 = 100. (f ) - ͙100 = - 10, since the negative sign is outside the radical symbol. (g) ͙ - 100 is not a real number, because the negative sign is inside the radical symbol. No real number squared equals - 100. Notice the difference among the square roots in parts (e), (f ), and (g).
5r - 9r + 8r - 5 29. - 6p + 5 - 4p + 6 + 11p 30. - 8x - 12 + 3x - 5x + 9 31. 31k + 22 - 5k + 6 + 3 32. 51r - 32 + 6r - 2r + 4 35. 516 + 2p2 36. 815 + 10x2 39. 2 + 312z - 52 - 314z + 62 - 8 40. - 4 + 414k - 32 - 612k + 82 + 7 33. - 21m + 12 - 1m - 42 37. - 12p + 52 + 312p + 42 - 2p 34. 61a - 52 - 1a + 62 38. - 17m - 122 - 214m + 72 - 8m Concept Check Complete each statement so that the indicated property is illustrated. Simplify each answer if possible. 41. 5x + 8x = 42. 9y - 6y = (distributive property) 43.
Algebra for College Students, 7th Edition by Margaret L. Lial