By Margaret L. Lial, John Hornsby, Terry McGinnis

**Is there whatever extra appealing than an “A” in Algebra?** to not the Lial group! Marge Lial, John Hornsby, and Terry McGinnis write their textbooks and accompanying assets with one objective in brain: giving scholars and academics all of the instruments they should be successful.

With this revision of the Lial Developmental Algebra sequence, the group has additional sophisticated the presentation and workouts in the course of the textual content. they provide numerous fascinating new assets for college kids and lecturers that may offer additional support while wanted, whatever the studying atmosphere (traditional, lab-based, hybrid, online)—new learn talents actions within the textual content, an up-to-date and increased Lial Video Library (available in MyMathLab), and a brand new accompanying Lial Video Library Workbook (available in MyMathLab)*.*

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**Extra resources for Algebra for college students**

**Example text**

30. Some rational numbers are irrational. 31. Some rational numbers are whole numbers. 32. Some real numbers are integers. 33. The absolute value of any number is the same as the absolute value of its additive inverse. 34. The absolute value of any nonzero number is positive. 35. Concept Check Match each expression in parts (a)–(d) with its value in choices A–D. Choices may be used once, more than once, or not at all. (a) - 1- 42 I (c) - | - 4 | II (b) | - 4 | (d) - | - 1- 42 | 36. Concept Check A.

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). Part (e) is the positive or principal square root of 100, part (f ) is the negative square root of 100, and part (g) is the square root of - 100, which is not a real number.

27 NOW TRY Using the Order of Operations = 4 4. 5 Multiplications and divisions are done in the order in which they appear from left to right. So we divide first here. Simplify. (b) NOW TRY ANSWERS Divide. Work inside the parentheses first. Divide inside the parentheses. Subtract inside the parentheses. Multiply. Add. NOW TRY 28 Review of the Real Number System CHAPTER 1 NOW TRY EXERCISE 6 Simplify. EXAMPLE 6 # Simplify. Using the Order of Operations 5 + 1- 2 32122 ͙36 - 4 - 2 2 - 8 # 3 + 13 32 6 # ͙9 - 9 = # Work separately above and below the fraction bar.