Beginning Algebra, 11th Edition by Margaret L. Lial

By Margaret L. Lial

Is there something extra appealing 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 aim in brain: giving scholars all of the instruments they should be successful.   With this revision, the Lial workforce has additional sophisticated the presentation and routines in the course of the textual content. they give a number of intriguing new assets for college students that would offer additional aid whilst wanted, whatever the studying setting (classroom, lab, hybrid, on-line, etc)–new examine talents actions within the textual content, an extended video application to be had in MyMathLab and at the Video assets on DVD, and extra!

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Sample text

6x x - 2 5 21. 459x 17. 3x - 5 2x 18. 4x - 1 3x 22. 275x Find the value for (a) x = 2 and y = 1 and (b) x = 1 and y = 5. See Example 2. 23. 8x + 3y + 5 27. x + 4 y 24. 4x + 2y + 7 28. y + 8 x 25. 31x + 2y2 26. 212x + y2 y x 29. + 2 3 30. 34. 6x 2 + 4y y x + 5 4 31. 2x + 4y - 6 5y + 2 32. 4x + 3y - 1 x 33. 2y 2 + 5x 35. 3x + y 2 2x + 3y 36. x2 + 1 4x + 5y 37. 32y 2 38. 25y 2 Write each word phrase as an algebraic expression, using x as the variable. See Example 3. 39. Twelve times a number 40. Fifteen times a number 41.

3 5 # # s 15 4 # 8 25 46. 21 8 # 4 7 1 4 # 1 2 3 # 1 2 3 50. 2 20 21 3 5 5 3 , 4 8 54. 7 3 , 5 10 24 6 , 7 21 57. 3 , 12 4 58. 2 , 30 5 64. 2 B. q + s 68. Concept Check 3 5 49. 3 7 4 9 61. 6 3 3 , 4 8 62. 5 7 3 , 5 10 2 2 , 1 9 5 65. 2 5 15 , 1 8 32 66. 2 3 4 , 1 10 5 67. Concept Check For the fractions common denominator? A. q 42. 53. 3 5 60. 8 , 1 5 , 1 2 7 4 9 # 15 16 1 6 52. 3 8 32 , 5 15 # # C. p # p q and rs , which one of the following can serve as a D. p + r r Write a fraction with denominator 24 that is equivalent to 58 .

Multiplications and divisions are done from left to right as they appear. Then additions and subtractions are done from left to right as they appear. NOW TRY OBJECTIVE 3 Use more than one grouping symbol. In an expression such as 218 + 316 + 522, we often use brackets, 3 4, in place of one pair of parentheses. NOW TRY EXERCISE 3 Simplify each expression. (a) 73132 - 12 + 44 (b) 9114 - 42 - 2 4 + 3 # EXAMPLE 3 Using Brackets and Fraction Bars as Grouping Symbols Simplify each expression. (a) 238 + 316 + 524 6 (b) = 238 + 311124 Add inside parentheses.

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