Intermediate Algebra (11th edition)

314 CHAPTER 5 Exponents, Polynomials, and Polynomial Functions

70. 71. 72.

73. 74. 75.

76. 77.

78. 79.

80. 81.

82.In 2009, the estimated population of New Zealand was The population

density was 40.76 people per square mile. Based on this information, what is the area

of New Zealand, to the nearest square mile? (Source: The World Factbook.)

4.2134* 106.

12 k- 12 - 13 k^2 - 2 k+ 62

20 y^3 x^3 + 15 y^4 x+ 25 yx^4

10 yx^2

313 m- 5 n 2 +p 4313 m- 5 n 2 - p 4

15 z^2 x^32212 zx^22 -^1

1 - 10 zx-^32 -^213 z-^1 x-^422

8 x^2 - 23 x+ 2

x- 3

1 y^62 -^512 y-^32 -^4

1 - z-^223

51 z-^32 -^1

7 p^513 p^4 +p^3 + 2 p^2212 x- 922

5 -^3 - 1 - 322

6 -^1 y^31 y^22 -^2

6 y-^41 y-^12

1.Match each expression (a) – ( j) in Column I with its equivalent expression A– J in Column II.

Choices may be used once, more than once, or not at all.

III

(a) (b) A. 1 B.

(c) (d) C. D.

(e) (f ) E. F.

(g) (h) G. H. 0

(i) 72 ( j) 1 - 72 -^2 I. 49 J.none of these

2

7

7 -^1

2 -^1

17 + 22 -^1

9

14

- 72 7 -^1 + 2 -^1 - 49

- 1

1

49

- 70 1 - 720

1

9

7 -^270

TEST

CHAPTER 5

View the complete solutions to
all Chapter Test exercises on
the Video Resources on DVD.

Step-by-step test solutions are found on the Chapter Test Prep Videos

available via the Video Resources on DVD, in , or on

(search “LialIntermediateAlg”).

CHAPTER

VIDEOS

MIXED REVIEW EXERCISES

69.Concept Check Match each expression (a) – ( j) in Column I with its equivalent

expression A– J in Column II. Choices may be used once, more than once, or not at all.

III

(a) (b) A. B. 0

(c) (d) C. 1 D.

(e) (f ) E. F.

(g) (h) G. H.

(i) ( j) I. 16 J. none of these

In Exercises 70 – 81, perform the indicated operations and then simplify. Write answers

with only positive exponents. Assume that all variables represent nonzero real numbers.

4 -^2 + 4 -^142

- 40 + 40 - 40 - 40 - 16 - 2

5

16

1 - 42 -^2 - 40 - 1

-

1

16

40 1 - 420

1

16

4 -^2 - 42