Introductory Algebra for College Students (7th Edition)
7th Edition
ISBN: 9780134178059
Author: Robert F. Blitzer
Publisher: PEARSON
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Concept explainers
Question
Chapter 7.1, Problem 77ES
To determine
Simplify the rational expression
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Check out a sample textbook solutionStudents have asked these similar questions
For Exercises 8–10,
a. Simplify the expression. Do not rationalize the denominator.
b. Find the values of x for which the expression equals zero.
c. Find the values of x for which the denominator is zero.
4x(4x – 5) – 2x² (4)
8.
-6x(6x + 1) – (–3x²)(6)
(6x + 1)2
9.
(4x – 5)?
-
10. V4 – x² - -() 2)
Make Sense? In Exercises 135–138, determine whether each
statement makes sense or does not make sense, and explain your
reasoning.
135. Knowing the difference between factors and terms is
important: In (3x?y)“, I can distribute the exponent 2 on
each factor, but in (3x² + y)', I cannot do the same thing
on each term.
136. I used the FOIL method to find the product of x + 5 and
x + 2x + 1.
137. Instead of using the formula for the square of a binomial
sum, I prefer to write the binomial sum twice and then
apply the FOIL method.
138. Special-product formulas have patterns that make
their multiplications quicker than using the FOIL
method.
In Exercises 129–132, determine whether each statement is true
or false. If the statement is false, make the necessary change(s) to
produce a true statement.
129. 9x? + 15x + 25 = (3x + 5)
130. x - 27 = (x – 3)(x² + 6x + 9)
131. x³ – 64 = (x – 4)3
132. 4x2 – 121 = (2x – 11)
Chapter 7 Solutions
Introductory Algebra for College Students (7th Edition)
Ch. 7.1 - Fill in each blank so that the resulting statement...Ch. 7.1 - Prob. 2CAVCCh. 7.1 - Prob. 3CAVCCh. 7.1 - Prob. 4CAVCCh. 7.1 - Prob. 5CAVCCh. 7.1 - Fill in each blank so that the resulting statement...Ch. 7.1 - Prob. 7CAVCCh. 7.1 - Prob. 8CAVCCh. 7.1 - Prob. 9CAVCCh. 7.1 - Prob. 1ES
Ch. 7.1 - Prob. 2ESCh. 7.1 - Prob. 3ESCh. 7.1 - Prob. 4ESCh. 7.1 - Prob. 5ESCh. 7.1 - Prob. 6ESCh. 7.1 - Prob. 7ESCh. 7.1 - In Exercises 1 - 20, find all numbers for which...Ch. 7.1 - Prob. 9ESCh. 7.1 - Prob. 10ESCh. 7.1 - Prob. 11ESCh. 7.1 - Prob. 12ESCh. 7.1 - Prob. 13ESCh. 7.1 - Prob. 14ESCh. 7.1 - Prob. 15ESCh. 7.1 - Prob. 16ESCh. 7.1 - Prob. 17ESCh. 7.1 - In Exercises 1 - 20, find all numbers for which...Ch. 7.1 - Prob. 19ESCh. 7.1 - Prob. 20ESCh. 7.1 - Prob. 21ESCh. 7.1 - Prob. 22ESCh. 7.1 - Prob. 23ESCh. 7.1 - Prob. 24ESCh. 7.1 - Prob. 25ESCh. 7.1 - Prob. 26ESCh. 7.1 - Prob. 27ESCh. 7.1 - Prob. 28ESCh. 7.1 - Prob. 29ESCh. 7.1 - Prob. 30ESCh. 7.1 - Prob. 31ESCh. 7.1 - Prob. 32ESCh. 7.1 - Prob. 33ESCh. 7.1 - Prob. 34ESCh. 7.1 - Prob. 35ESCh. 7.1 - Prob. 36ESCh. 7.1 - Prob. 37ESCh. 7.1 - Prob. 38ESCh. 7.1 - Prob. 39ESCh. 7.1 - Prob. 40ESCh. 7.1 - Prob. 41ESCh. 7.1 - Prob. 42ESCh. 7.1 - Prob. 43ESCh. 7.1 - Prob. 44ESCh. 7.1 - Prob. 45ESCh. 7.1 - Prob. 46ESCh. 7.1 - Prob. 47ESCh. 7.1 - Prob. 48ESCh. 7.1 - Prob. 49ESCh. 7.1 - Prob. 50ESCh. 7.1 - Prob. 51ESCh. 7.1 - Prob. 52ESCh. 7.1 - Prob. 53ESCh. 7.1 - Prob. 54ESCh. 7.1 - Prob. 55ESCh. 7.1 - Prob. 56ESCh. 7.1 - Prob. 57ESCh. 7.1 - Prob. 58ESCh. 7.1 - Prob. 59ESCh. 7.1 - Prob. 60ESCh. 7.1 - Prob. 61ESCh. 7.1 - Prob. 62ESCh. 7.1 - Prob. 63ESCh. 7.1 - Prob. 64ESCh. 7.1 - Prob. 65ESCh. 7.1 - Prob. 66ESCh. 7.1 - Prob. 67ESCh. 7.1 - Prob. 68ESCh. 7.1 - Prob. 69ESCh. 7.1 - Prob. 70ESCh. 7.1 - Prob. 71ESCh. 7.1 - Prob. 72ESCh. 7.1 - Prob. 73ESCh. 7.1 - Prob. 74ESCh. 7.1 - Prob. 75ESCh. 7.1 - Prob. 76ESCh. 7.1 - Prob. 77ESCh. 7.1 - Prob. 78ESCh. 7.1 - Prob. 79ESCh. 7.1 - Prob. 80ESCh. 7.1 - Prob. 81ESCh. 7.1 - Prob. 82ESCh. 7.1 - Prob. 83ESCh. 7.1 - Prob. 84ESCh. 7.1 - Prob. 85ESCh. 7.1 - Prob. 86ESCh. 7.1 - Prob. 87ESCh. 7.1 - Prob. 88ESCh. 7.1 - Prob. 89ESCh. 7.1 - A company that manufactures small canoes has costs...Ch. 7.1 - Prob. 91ESCh. 7.1 - Prob. 92ESCh. 7.1 - Prob. 93ESCh. 7.1 - Prob. 94ESCh. 7.1 - Prob. 95ESCh. 7.1 - Prob. 96ESCh. 7.1 - Prob. 97ESCh. 7.1 - Prob. 98ESCh. 7.1 - Prob. 99ESCh. 7.1 - Prob. 100ESCh. 7.1 - Prob. 101ESCh. 7.1 - Prob. 102ESCh. 7.1 - Prob. 103ESCh. 7.1 - Prob. 104ESCh. 7.1 - Prob. 105ESCh. 7.1 - Prob. 106ESCh. 7.1 - Prob. 107ESCh. 7.1 - Prob. 108ESCh. 7.1 - Prob. 109ESCh. 7.1 - Prob. 110ESCh. 7.1 - Prob. 111ESCh. 7.1 - Prob. 112ESCh. 7.1 - Prob. 113ESCh. 7.1 - Prob. 114ESCh. 7.1 - Prob. 115ESCh. 7.1 - Prob. 116ESCh. 7.1 - Prob. 117ESCh. 7.1 - Prob. 118ESCh. 7.2 - Prob. 1CAVCCh. 7.2 - Prob. 2CAVCCh. 7.2 - Prob. 3CAVCCh. 7.2 - Prob. 4CAVCCh. 7.2 - Prob. 1ESCh. 7.2 - Prob. 2ESCh. 7.2 - Prob. 3ESCh. 7.2 - Prob. 4ESCh. 7.2 - Prob. 5ESCh. 7.2 - Prob. 6ESCh. 7.2 - Prob. 7ESCh. 7.2 - Prob. 8ESCh. 7.2 - Prob. 9ESCh. 7.2 - Prob. 10ESCh. 7.2 - Prob. 11ESCh. 7.2 - Prob. 12ESCh. 7.2 - Prob. 13ESCh. 7.2 - Prob. 14ESCh. 7.2 - Prob. 15ESCh. 7.2 - Prob. 16ESCh. 7.2 - Prob. 17ESCh. 7.2 - Prob. 18ESCh. 7.2 - Prob. 19ESCh. 7.2 - Prob. 20ESCh. 7.2 - Prob. 21ESCh. 7.2 - Prob. 22ESCh. 7.2 - Prob. 23ESCh. 7.2 - Prob. 24ESCh. 7.2 - Prob. 25ESCh. 7.2 - Prob. 26ESCh. 7.2 - Prob. 27ESCh. 7.2 - Prob. 28ESCh. 7.2 - Prob. 29ESCh. 7.2 - Prob. 30ESCh. 7.2 - Prob. 31ESCh. 7.2 - Prob. 32ESCh. 7.2 - Prob. 33ESCh. 7.2 - Prob. 34ESCh. 7.2 - Prob. 35ESCh. 7.2 - Prob. 36ESCh. 7.2 - Prob. 37ESCh. 7.2 - Prob. 38ESCh. 7.2 - Prob. 39ESCh. 7.2 - Prob. 40ESCh. 7.2 - Prob. 41ESCh. 7.2 - Prob. 42ESCh. 7.2 - Prob. 43ESCh. 7.2 - Prob. 44ESCh. 7.2 - Prob. 45ESCh. 7.2 - Prob. 46ESCh. 7.2 - Prob. 47ESCh. 7.2 - Prob. 48ESCh. 7.2 - Prob. 49ESCh. 7.2 - Prob. 50ESCh. 7.2 - Prob. 51ESCh. 7.2 - Prob. 52ESCh. 7.2 - Prob. 53ESCh. 7.2 - Prob. 54ESCh. 7.2 - Prob. 55ESCh. 7.2 - Prob. 56ESCh. 7.2 - Prob. 57ESCh. 7.2 - Prob. 58ESCh. 7.2 - Prob. 59ESCh. 7.2 - Prob. 60ESCh. 7.2 - Prob. 61ESCh. 7.2 - Prob. 62ESCh. 7.2 - Prob. 63ESCh. 7.2 - Prob. 64ESCh. 7.2 - Prob. 65ESCh. 7.2 - Prob. 66ESCh. 7.2 - Prob. 67ESCh. 7.2 - Prob. 68ESCh. 7.2 - Prob. 69ESCh. 7.2 - Prob. 70ESCh. 7.2 - Prob. 71ESCh. 7.2 - Prob. 72ESCh. 7.2 - Prob. 73ESCh. 7.2 - Prob. 74ESCh. 7.2 - Prob. 75ESCh. 7.2 - Prob. 76ESCh. 7.2 - Prob. 77ESCh. 7.2 - Prob. 78ESCh. 7.2 - Prob. 79ESCh. 7.2 - Prob. 80ESCh. 7.2 - Prob. 81ESCh. 7.2 - Prob. 82ESCh. 7.2 - Prob. 83ESCh. 7.2 - Prob. 84ESCh. 7.2 - Prob. 85ESCh. 7.2 - Prob. 86ESCh. 7.2 - Prob. 87ESCh. 7.2 - Prob. 88ESCh. 7.2 - Prob. 89ESCh. 7.2 - Prob. 90ESCh. 7.2 - Prob. 91ESCh. 7.2 - Prob. 92ESCh. 7.2 - Prob. 93ESCh. 7.2 - Prob. 94ESCh. 7.2 - Prob. 95ESCh. 7.2 - Prob. 96ESCh. 7.2 - Prob. 97ESCh. 7.2 - Prob. 98ESCh. 7.2 - Prob. 99ESCh. 7.2 - Prob. 100ESCh. 7.3 - Prob. 1CAVCCh. 7.3 - Prob. 2CAVCCh. 7.3 - Prob. 3CAVCCh. 7.3 - Prob. 4CAVCCh. 7.3 - Prob. 5CAVCCh. 7.3 - Prob. 6CAVCCh. 7.3 - Prob. 1ESCh. 7.3 - Prob. 2ESCh. 7.3 - Prob. 3ESCh. 7.3 - Prob. 4ESCh. 7.3 - Prob. 5ESCh. 7.3 - Prob. 6ESCh. 7.3 - Prob. 7ESCh. 7.3 - Prob. 8ESCh. 7.3 - Prob. 9ESCh. 7.3 - Prob. 10ESCh. 7.3 - Prob. 11ESCh. 7.3 - Prob. 12ESCh. 7.3 - Prob. 13ESCh. 7.3 - Prob. 14ESCh. 7.3 - Prob. 15ESCh. 7.3 - Prob. 16ESCh. 7.3 - Prob. 17ESCh. 7.3 - Prob. 18ESCh. 7.3 - Prob. 19ESCh. 7.3 - Prob. 20ESCh. 7.3 - Prob. 21ESCh. 7.3 - Prob. 22ESCh. 7.3 - Prob. 23ESCh. 7.3 - Prob. 24ESCh. 7.3 - Prob. 25ESCh. 7.3 - Prob. 26ESCh. 7.3 - Prob. 27ESCh. 7.3 - Prob. 28ESCh. 7.3 - Prob. 29ESCh. 7.3 - Prob. 30ESCh. 7.3 - Prob. 31ESCh. 7.3 - Prob. 32ESCh. 7.3 - Prob. 33ESCh. 7.3 - Prob. 34ESCh. 7.3 - Prob. 35ESCh. 7.3 - Prob. 36ESCh. 7.3 - Prob. 37ESCh. 7.3 - Prob. 38ESCh. 7.3 - Prob. 39ESCh. 7.3 - Prob. 40ESCh. 7.3 - Prob. 41ESCh. 7.3 - Prob. 42ESCh. 7.3 - Prob. 43ESCh. 7.3 - Prob. 44ESCh. 7.3 - Prob. 45ESCh. 7.3 - Prob. 46ESCh. 7.3 - Prob. 47ESCh. 7.3 - Prob. 48ESCh. 7.3 - Prob. 49ESCh. 7.3 - Prob. 50ESCh. 7.3 - Prob. 51ESCh. 7.3 - Prob. 52ESCh. 7.3 - Prob. 53ESCh. 7.3 - Prob. 54ESCh. 7.3 - Prob. 55ESCh. 7.3 - Prob. 56ESCh. 7.3 - Prob. 57ESCh. 7.3 - Prob. 58ESCh. 7.3 - Prob. 59ESCh. 7.3 - Prob. 60ESCh. 7.3 - Prob. 61ESCh. 7.3 - Prob. 62ESCh. 7.3 - Prob. 63ESCh. 7.3 - Prob. 64ESCh. 7.3 - In Exercises 65-72, perform the indicated...Ch. 7.3 - Prob. 66ESCh. 7.3 - Prob. 67ESCh. 7.3 - In Exercises 65—72, perform the indicated...Ch. 7.3 - Prob. 69ESCh. 7.3 - Prob. 70ESCh. 7.3 - In Exercises 65—72, perform the indicated...Ch. 7.3 - Prob. 72ESCh. 7.3 - Prob. 73ESCh. 7.3 - Prob. 74ESCh. 7.3 - Prob. 75ESCh. 7.3 - Prob. 76ESCh. 7.3 - Explain how to add rational expressions when...Ch. 7.3 - Prob. 78ESCh. 7.3 - Prob. 79ESCh. 7.3 - Prob. 80ESCh. 7.3 - Prob. 81ESCh. 7.3 - Prob. 82ESCh. 7.3 - Prob. 83ESCh. 7.3 - Prob. 84ESCh. 7.3 - Prob. 85ESCh. 7.3 - Prob. 86ESCh. 7.3 - Prob. 87ESCh. 7.3 - Prob. 88ESCh. 7.3 - Prob. 89ESCh. 7.3 - Prob. 90ESCh. 7.3 - Prob. 91ESCh. 7.3 - Prob. 92ESCh. 7.3 - Prob. 93ESCh. 7.3 - Prob. 94ESCh. 7.3 - In Exercises 91—95, find the missing expression....Ch. 7.3 - Prob. 96ESCh. 7.3 - Prob. 97ESCh. 7.3 - Prob. 98ESCh. 7.3 - Prob. 99ESCh. 7.3 - Prob. 100ESCh. 7.3 - Prob. 101ESCh. 7.3 - Prob. 102ESCh. 7.3 - Prob. 103ESCh. 7.3 - Prob. 104ESCh. 7.4 - Prob. 1CAVCCh. 7.4 - Prob. 2CAVCCh. 7.4 - Prob. 3CAVCCh. 7.4 - Prob. 4CAVCCh. 7.4 - Prob. 5CAVCCh. 7.4 - Prob. 1ESCh. 7.4 - Prob. 2ESCh. 7.4 - Prob. 3ESCh. 7.4 - Prob. 4ESCh. 7.4 - Prob. 5ESCh. 7.4 - Prob. 6ESCh. 7.4 - Prob. 7ESCh. 7.4 - Prob. 8ESCh. 7.4 - Prob. 9ESCh. 7.4 - Prob. 10ESCh. 7.4 - Prob. 11ESCh. 7.4 - Prob. 12ESCh. 7.4 - Prob. 13ESCh. 7.4 - Prob. 14ESCh. 7.4 - In Exercises 1-16, find the least common...Ch. 7.4 - In Exercises 1-16, find the least common...Ch. 7.4 - Prob. 17ESCh. 7.4 - Prob. 18ESCh. 7.4 - Prob. 19ESCh. 7.4 - Prob. 20ESCh. 7.4 - Prob. 21ESCh. 7.4 - Prob. 22ESCh. 7.4 - Prob. 23ESCh. 7.4 - Prob. 24ESCh. 7.4 - Prob. 25ESCh. 7.4 - Prob. 26ESCh. 7.4 - Prob. 27ESCh. 7.4 - Prob. 28ESCh. 7.4 - Prob. 29ESCh. 7.4 - In Exercises 17—82, add or subtract as indicated....Ch. 7.4 - Prob. 31ESCh. 7.4 - Prob. 32ESCh. 7.4 - Prob. 33ESCh. 7.4 - Prob. 34ESCh. 7.4 - Prob. 35ESCh. 7.4 - Prob. 36ESCh. 7.4 - Prob. 37ESCh. 7.4 - Prob. 38ESCh. 7.4 - Prob. 39ESCh. 7.4 - Prob. 40ESCh. 7.4 - Prob. 41ESCh. 7.4 - Prob. 42ESCh. 7.4 - Prob. 43ESCh. 7.4 - Prob. 44ESCh. 7.4 - Prob. 45ESCh. 7.4 - Prob. 46ESCh. 7.4 - Prob. 47ESCh. 7.4 - Prob. 48ESCh. 7.4 - Prob. 49ESCh. 7.4 - Prob. 50ESCh. 7.4 - Prob. 51ESCh. 7.4 - Prob. 52ESCh. 7.4 - In Exercises 17—82, add or subtract as indicated....Ch. 7.4 - In Exercises 17—82, add or subtract as indicated....Ch. 7.4 - In Exercises 17-82, add or subtract as indicated....Ch. 7.4 - In Exercises 17—82, add or subtract as indicated....Ch. 7.4 - Prob. 57ESCh. 7.4 - Prob. 58ESCh. 7.4 - Prob. 59ESCh. 7.4 - Prob. 60ESCh. 7.4 - Prob. 61ESCh. 7.4 - Prob. 62ESCh. 7.4 - Prob. 63ESCh. 7.4 - Prob. 64ESCh. 7.4 - Prob. 65ESCh. 7.4 - Prob. 66ESCh. 7.4 - Prob. 67ESCh. 7.4 - Prob. 68ESCh. 7.4 - Prob. 69ESCh. 7.4 - Prob. 70ESCh. 7.4 - Prob. 71ESCh. 7.4 - Prob. 72ESCh. 7.4 - Prob. 73ESCh. 7.4 - Prob. 74ESCh. 7.4 - Prob. 75ESCh. 7.4 - Prob. 76ESCh. 7.4 - Prob. 77ESCh. 7.4 - Prob. 78ESCh. 7.4 - Prob. 79ESCh. 7.4 - Prob. 80ESCh. 7.4 - Prob. 81ESCh. 7.4 - Prob. 82ESCh. 7.4 - Prob. 83ESCh. 7.4 - Prob. 84ESCh. 7.4 - Prob. 85ESCh. 7.4 - Prob. 86ESCh. 7.4 - Prob. 87ESCh. 7.4 - Prob. 88ESCh. 7.4 - Prob. 89ESCh. 7.4 - Prob. 90ESCh. 7.4 - Prob. 91ESCh. 7.4 - Prob. 92ESCh. 7.4 - Two formulas that approximate the dosage of e drug...Ch. 7.4 - Prob. 94ESCh. 7.4 - Prob. 95ESCh. 7.4 - Prob. 96ESCh. 7.4 - Prob. 97ESCh. 7.4 - Prob. 98ESCh. 7.4 - The graphs illustrate Young’s rule and Cowling’s...Ch. 7.4 - Prob. 100ESCh. 7.4 - In Exercises 101—102, express the perimeter of...Ch. 7.4 - In Exercises 101—102, express the perimeter of...Ch. 7.4 - Prob. 103ESCh. 7.4 - Prob. 104ESCh. 7.4 - Prob. 105ESCh. 7.4 - Prob. 106ESCh. 7.4 - The formulas in Exercises 93—96 relate the dosage...Ch. 7.4 - Make Sense? In Exercises 108—111, determine...Ch. 7.4 - Prob. 109ESCh. 7.4 - Prob. 110ESCh. 7.4 - Prob. 111ESCh. 7.4 - Prob. 112ESCh. 7.4 - Prob. 113ESCh. 7.4 - Prob. 114ESCh. 7.4 - Prob. 115ESCh. 7.4 - In Exercises 116—1l7, perform the indicated...Ch. 7.4 - In Exercises 116—1l7, perform the indicated...Ch. 7.4 - Prob. 118ESCh. 7.4 - Prob. 119ESCh. 7.4 - Prob. 120ESCh. 7.4 - Prob. 121ESCh. 7.4 - Prob. 122ESCh. 7.4 - Exercises 123-125 will help you prepare for the...Ch. 7.4 - Prob. 124ESCh. 7.4 - Prob. 125ESCh. 7.5 - Prob. 1CAVCCh. 7.5 - Prob. 2CAVCCh. 7.5 - Prob. 3CAVCCh. 7.5 - Prob. 4CAVCCh. 7.5 - Prob. 1ESCh. 7.5 - Prob. 2ESCh. 7.5 - In Exercises 1—40, simplify each complex rational...Ch. 7.5 - Prob. 4ESCh. 7.5 - Prob. 5ESCh. 7.5 - Prob. 6ESCh. 7.5 - Prob. 7ESCh. 7.5 - Prob. 8ESCh. 7.5 - Prob. 9ESCh. 7.5 - Prob. 10ESCh. 7.5 - Prob. 11ESCh. 7.5 - Prob. 12ESCh. 7.5 - Prob. 13ESCh. 7.5 - Prob. 14ESCh. 7.5 - Prob. 15ESCh. 7.5 - Prob. 16ESCh. 7.5 - Prob. 17ESCh. 7.5 - Prob. 18ESCh. 7.5 - Prob. 19ESCh. 7.5 - Prob. 20ESCh. 7.5 - Prob. 21ESCh. 7.5 - Prob. 22ESCh. 7.5 - Prob. 23ESCh. 7.5 - Prob. 24ESCh. 7.5 - Prob. 25ESCh. 7.5 - Prob. 26ESCh. 7.5 - Prob. 27ESCh. 7.5 - Prob. 28ESCh. 7.5 - Prob. 29ESCh. 7.5 - Prob. 30ESCh. 7.5 - Prob. 31ESCh. 7.5 - Prob. 32ESCh. 7.5 - Prob. 33ESCh. 7.5 - Prob. 34ESCh. 7.5 - Prob. 35ESCh. 7.5 - Prob. 36ESCh. 7.5 - Prob. 37ESCh. 7.5 - Prob. 38ESCh. 7.5 - Prob. 39ESCh. 7.5 - Prob. 40ESCh. 7.5 - Prob. 41ESCh. 7.5 - Prob. 42ESCh. 7.5 - Prob. 43ESCh. 7.5 - Prob. 44ESCh. 7.5 - Prob. 45ESCh. 7.5 - Prob. 46ESCh. 7.5 - Prob. 47ESCh. 7.5 - Prob. 48ESCh. 7.5 - Prob. 49ESCh. 7.5 - Prob. 50ESCh. 7.5 - Prob. 51ESCh. 7.5 - Prob. 52ESCh. 7.5 - Prob. 53ESCh. 7.5 - Prob. 54ESCh. 7.5 - Prob. 55ESCh. 7.5 - Prob. 56ESCh. 7.5 - Prob. 57ESCh. 7.5 - Prob. 58ESCh. 7.5 - Prob. 59ESCh. 7.5 - Prob. 60ESCh. 7.5 - Prob. 61ESCh. 7.5 - Prob. 62ESCh. 7.5 - Prob. 63ESCh. 7.5 - In one short sentence, five words or less, explain...Ch. 7.5 - In Exercise 65-66, simplify completely. 65....Ch. 7.5 - Prob. 66ESCh. 7.5 - Prob. 67ESCh. 7.5 - Prob. 68ESCh. 7.5 - Prob. 69ESCh. 7.5 - Prob. 70ESCh. 7.5 - Prob. 71ESCh. 7.5 - Prob. 72ESCh. 7.5 - Prob. 73ESCh. 7.5 - Prob. 74ESCh. 7.5 - Prob. 75ESCh. 7.6 - Prob. 1CAVCCh. 7.6 - Prob. 2CAVCCh. 7.6 - Prob. 3CAVCCh. 7.6 - Prob. 4CAVCCh. 7.6 - Prob. 5CAVCCh. 7.6 - Prob. 6CAVCCh. 7.6 - Prob. 7CAVCCh. 7.6 - Prob. 8CAVCCh. 7.6 - Prob. 9CAVCCh. 7.6 - Prob. 10CAVCCh. 7.6 - Prob. 1ESCh. 7.6 - Prob. 2ESCh. 7.6 - Prob. 3ESCh. 7.6 - Prob. 4ESCh. 7.6 - Prob. 5ESCh. 7.6 - Prob. 6ESCh. 7.6 - Prob. 7ESCh. 7.6 - Prob. 8ESCh. 7.6 - Prob. 9ESCh. 7.6 - Prob. 10ESCh. 7.6 - Prob. 11ESCh. 7.6 - Prob. 12ESCh. 7.6 - Prob. 13ESCh. 7.6 - Prob. 14ESCh. 7.6 - Prob. 15ESCh. 7.6 - Prob. 16ESCh. 7.6 - Prob. 17ESCh. 7.6 - Prob. 18ESCh. 7.6 - In Exercises 1—46, solve each rational equation....Ch. 7.6 - Prob. 20ESCh. 7.6 - Prob. 21ESCh. 7.6 - Prob. 22ESCh. 7.6 - Prob. 23ESCh. 7.6 - Prob. 24ESCh. 7.6 - Prob. 25ESCh. 7.6 - Prob. 26ESCh. 7.6 - Prob. 27ESCh. 7.6 - Prob. 28ESCh. 7.6 - Prob. 29ESCh. 7.6 - Prob. 30ESCh. 7.6 - Prob. 31ESCh. 7.6 - Prob. 32ESCh. 7.6 - Prob. 33ESCh. 7.6 - Prob. 34ESCh. 7.6 - Prob. 35ESCh. 7.6 - Prob. 36ESCh. 7.6 - Prob. 37ESCh. 7.6 - Prob. 38ESCh. 7.6 - Prob. 39ESCh. 7.6 - Prob. 40ESCh. 7.6 - Prob. 41ESCh. 7.6 - In Exercises 1—46, solve each rational equation....Ch. 7.6 - Prob. 43ESCh. 7.6 - Prob. 44ESCh. 7.6 - Prob. 45ESCh. 7.6 - Prob. 46ESCh. 7.6 - Prob. 47ESCh. 7.6 - Prob. 48ESCh. 7.6 - Prob. 49ESCh. 7.6 - Prob. 50ESCh. 7.6 - Prob. 51ESCh. 7.6 - Prob. 52ESCh. 7.6 - Prob. 53ESCh. 7.6 - Prob. 54ESCh. 7.6 - Prob. 55ESCh. 7.6 - Prob. 56ESCh. 7.6 - Prob. 57ESCh. 7.6 - Prob. 58ESCh. 7.6 - Prob. 59ESCh. 7.6 - Prob. 60ESCh. 7.6 - Prob. 61ESCh. 7.6 - Prob. 62ESCh. 7.6 - Prob. 63ESCh. 7.6 - Prob. 64ESCh. 7.6 - Prob. 65ESCh. 7.6 - Prob. 66ESCh. 7.6 - Prob. 67ESCh. 7.6 - Prob. 68ESCh. 7.6 - Prob. 69ESCh. 7.6 - Prob. 70ESCh. 7.6 - Prob. 71ESCh. 7.6 - Prob. 72ESCh. 7.6 - Prob. 73ESCh. 7.6 - Prob. 74ESCh. 7.6 - Prob. 75ESCh. 7.6 - Prob. 76ESCh. 7.6 - Prob. 77ESCh. 7.6 - Prob. 78ESCh. 7.6 - In Exercises 78-79, solve each rational equation....Ch. 7.6 - Prob. 80ESCh. 7.6 - Prob. 81ESCh. 7.6 - Prob. 82ESCh. 7.6 - Prob. 83ESCh. 7.6 - Prob. 84ESCh. 7.6 - Simplify: (3x2)(4x10) (Section 5.7, Example 3)Ch. 7.6 - Prob. 86ESCh. 7.6 - Prob. 87ESCh. 7.6 - Prob. 88ESCh. 7.6 - Prob. 89ESCh. 7.7 - Prob. 1CAVCCh. 7.7 - Prob. 2CAVCCh. 7.7 - Prob. 3CAVCCh. 7.7 - Prob. 4CAVCCh. 7.7 - Prob. 5CAVCCh. 7.7 - Prob. 1ESCh. 7.7 - Prob. 2ESCh. 7.7 - Prob. 3ESCh. 7.7 - Prob. 4ESCh. 7.7 - Prob. 5ESCh. 7.7 - Prob. 6ESCh. 7.7 - Prob. 7ESCh. 7.7 - Prob. 8ESCh. 7.7 - Prob. 9ESCh. 7.7 - Prob. 10ESCh. 7.7 - Prob. 11ESCh. 7.7 - Prob. 12ESCh. 7.7 - Prob. 13ESCh. 7.7 - Prob. 14ESCh. 7.7 - Prob. 15ESCh. 7.7 - Prob. 16ESCh. 7.7 - Prob. 17ESCh. 7.7 - Prob. 18ESCh. 7.7 - Prob. 19ESCh. 7.7 - Prob. 20ESCh. 7.7 - Prob. 21ESCh. 7.7 - Prob. 22ESCh. 7.7 - Use a proportion to solve each problem in...Ch. 7.7 - Prob. 24ESCh. 7.7 - Prob. 25ESCh. 7.7 - Prob. 26ESCh. 7.7 - Prob. 27ESCh. 7.7 - Prob. 28ESCh. 7.7 - Prob. 29ESCh. 7.7 - Prob. 30ESCh. 7.7 - Prob. 31ESCh. 7.7 - Prob. 32ESCh. 7.7 - Prob. 33ESCh. 7.7 - Prob. 34ESCh. 7.7 - Prob. 35ESCh. 7.7 - Prob. 36ESCh. 7.7 - Prob. 37ESCh. 7.7 - Prob. 38ESCh. 7.7 - Prob. 39ESCh. 7.7 - Prob. 40ESCh. 7.7 - Prob. 41ESCh. 7.7 - Prob. 42ESCh. 7.7 - Prob. 43ESCh. 7.7 - Prob. 44ESCh. 7.7 - Prob. 45ESCh. 7.7 - Prob. 46ESCh. 7.7 - Prob. 47ESCh. 7.7 - Prob. 48ESCh. 7.7 - Prob. 49ESCh. 7.7 - Prob. 50ESCh. 7.7 - Prob. 51ESCh. 7.7 - Prob. 52ESCh. 7.7 - Prob. 53ESCh. 7.7 - Prob. 54ESCh. 7.7 - Prob. 55ESCh. 7.7 - Prob. 56ESCh. 7.7 - Prob. 57ESCh. 7.7 - Prob. 58ESCh. 7.8 - Prob. 1CAVCCh. 7.8 - Fill in each blank so that the resulting statement...Ch. 7.8 - Prob. 3CAVCCh. 7.8 - Prob. 4CAVCCh. 7.8 - Prob. 1ESCh. 7.8 - Prob. 2ESCh. 7.8 - Prob. 3ESCh. 7.8 - Prob. 4ESCh. 7.8 - Prob. 5ESCh. 7.8 - Prob. 6ESCh. 7.8 - Prob. 7ESCh. 7.8 - Prob. 8ESCh. 7.8 - Prob. 9ESCh. 7.8 - Prob. 10ESCh. 7.8 - Prob. 11ESCh. 7.8 - Prob. 12ESCh. 7.8 - Prob. 13ESCh. 7.8 - Prob. 14ESCh. 7.8 - Prob. 15ESCh. 7.8 - Prob. 16ESCh. 7.8 - Prob. 17ESCh. 7.8 - Prob. 18ESCh. 7.8 - Prob. 19ESCh. 7.8 - Prob. 20ESCh. 7.8 - Prob. 21ESCh. 7.8 - Prob. 22ESCh. 7.8 - Prob. 23ESCh. 7.8 - Prob. 24ESCh. 7.8 - What does it mean if two quantities vary directly?Ch. 7.8 - Prob. 26ESCh. 7.8 - What does it mean if two quantities vary...Ch. 7.8 - Prob. 28ESCh. 7.8 - Prob. 29ESCh. 7.8 - Prob. 30ESCh. 7.8 - Prob. 31ESCh. 7.8 - Prob. 32ESCh. 7.8 - Prob. 33ESCh. 7.8 - Prob. 34ESCh. 7.8 - Prob. 35ESCh. 7.8 - Prob. 36ESCh. 7.8 - Prob. 37ESCh. 7.8 - Prob. 38ESCh. 7.8 - Prob. 39ESCh. 7.8 - Exercises 38—40 will help you prepare for the...Ch. 7 - Prob. 1MCPCh. 7 - Prob. 2MCPCh. 7 - Prob. 3MCPCh. 7 - Prob. 4MCPCh. 7 - Prob. 5MCPCh. 7 - Prob. 6MCPCh. 7 - Prob. 7MCPCh. 7 - Prob. 8MCPCh. 7 - Prob. 9MCPCh. 7 - Prob. 10MCPCh. 7 - Prob. 11MCPCh. 7 - Prob. 12MCPCh. 7 - Prob. 13MCPCh. 7 - Prob. 14MCPCh. 7 - Prob. 15MCPCh. 7 - Prob. 16MCPCh. 7 - Prob. 17MCPCh. 7 - Prob. 18MCPCh. 7 - Prob. 19MCPCh. 7 - Prob. 20MCPCh. 7 - Prob. 1RECh. 7 - Prob. 2RECh. 7 - Prob. 3RECh. 7 - Prob. 4RECh. 7 - Prob. 5RECh. 7 - Prob. 6RECh. 7 - Prob. 7RECh. 7 - Prob. 8RECh. 7 - Prob. 9RECh. 7 - Prob. 10RECh. 7 - Prob. 11RECh. 7 - Prob. 12RECh. 7 - Prob. 13RECh. 7 - Prob. 14RECh. 7 - Prob. 15RECh. 7 - Prob. 16RECh. 7 - Prob. 17RECh. 7 - Prob. 18RECh. 7 - Prob. 19RECh. 7 - Prob. 20RECh. 7 - Prob. 21RECh. 7 - Prob. 22RECh. 7 - Prob. 23RECh. 7 - Prob. 24RECh. 7 - Prob. 25RECh. 7 - Prob. 26RECh. 7 - Prob. 27RECh. 7 - Prob. 28RECh. 7 - Prob. 29RECh. 7 - Prob. 30RECh. 7 - Prob. 31RECh. 7 - Prob. 32RECh. 7 - Prob. 33RECh. 7 - Prob. 34RECh. 7 - Prob. 35RECh. 7 - Prob. 36RECh. 7 - Prob. 37RECh. 7 - Prob. 38RECh. 7 - Prob. 39RECh. 7 - Prob. 40RECh. 7 - Prob. 41RECh. 7 - Prob. 42RECh. 7 - Prob. 43RECh. 7 - Prob. 44RECh. 7 - Prob. 45RECh. 7 - Prob. 46RECh. 7 - Prob. 47RECh. 7 - Prob. 48RECh. 7 - Prob. 49RECh. 7 - Prob. 50RECh. 7 - Prob. 51RECh. 7 - Prob. 52RECh. 7 - Prob. 53RECh. 7 - Prob. 54RECh. 7 - Prob. 55RECh. 7 - Prob. 56RECh. 7 - Prob. 57RECh. 7 - Prob. 58RECh. 7 - Prob. 59RECh. 7 - Prob. 60RECh. 7 - Prob. 61RECh. 7 - Prob. 62RECh. 7 - The triangles shown in the figure are similar Find...Ch. 7 - Prob. 64RECh. 7 - Prob. 65RECh. 7 - Prob. 66RECh. 7 - Prob. 1TCh. 7 - Prob. 2TCh. 7 - Prob. 3TCh. 7 - Prob. 4TCh. 7 - Prob. 5TCh. 7 - Prob. 6TCh. 7 - Prob. 7TCh. 7 - Prob. 8TCh. 7 - Prob. 9TCh. 7 - Prob. 10TCh. 7 - Prob. 11TCh. 7 - Prob. 12TCh. 7 - Prob. 13TCh. 7 - Prob. 14TCh. 7 - Prob. 15TCh. 7 - Prob. 16TCh. 7 - Prob. 17TCh. 7 - Prob. 18TCh. 7 - Prob. 19TCh. 7 - Prob. 20TCh. 7 - Prob. 21TCh. 7 - Prob. 22TCh. 7 - Prob. 23TCh. 7 - Prob. 24TCh. 7 - Prob. 25TCh. 7 - The amount of current flowing in an electrical...Ch. 7 - Prob. 1CRECh. 7 - Prob. 2CRECh. 7 - Prob. 3CRECh. 7 - Prob. 4CRECh. 7 - Prob. 5CRECh. 7 - Prob. 6CRECh. 7 - Prob. 7CRECh. 7 - Prob. 8CRECh. 7 - Prob. 9CRECh. 7 - Prob. 10CRECh. 7 - Prob. 11CRECh. 7 - Prob. 12CRECh. 7 - Prob. 13CRECh. 7 - Prob. 14CRECh. 7 - Prob. 15CRECh. 7 - Prob. 16CRECh. 7 - Prob. 17CRECh. 7 - Prob. 18CRECh. 7 - You invested $4000, part at 5% and the remainder...Ch. 7 - Prob. 20CRE
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- In Exercises 12-13, simplify each rational expression. 1 4 12. x + 4 1 + 1 3 x + 2 13. 2 x2 + 2xarrow_forwardIn Exercises 34–37, solve each polynomial equation. 34. 3x? = 5x + 2 35. (5x + 4)(x – 1) = 2 36. 15x? – 5x = 0 37. x - 4x2 - x + 4 = 0arrow_forwardIn Exercises 132–137, factor each polynomial. Assume that all variable exponents represent whole numbers. 132. 9x2" + x" – 8 133. 4x2n – 9x" + 5 134. an+2 – a"+2 – 6a? 135. b2n+2 + 3b"+2 10b2 136. 3c"+2 10c"+1 + 3c" 137. 2d"+2 5d"+1 + 3d"arrow_forward
- In Exercises 4-8, simplify each rational expression. If the rational expression cannot be simplified, so state. 5x – 35x 4. 15x2 x2 + 6x – 7 x? – 49 6x? + 7x + 2 6. 2x2 – 9x – 5 x? + 4 7. x - 4 x3 – 8 8. x - 4 .2 5.arrow_forwardIn Exercises 83–90, perform the indicated operation or operations. 83. (3x + 4y)? - (3x – 4y) 84. (5x + 2y) - (5x – 2y) 85. (5x – 7)(3x – 2) – (4x – 5)(6x – 1) 86. (3x + 5)(2x - 9) - (7x – 2)(x – 1) 87. (2x + 5)(2r - 5)(4x? + 25) 88. (3x + 4)(3x – 4)(9x² + 16) (2x – 7)5 89. (2x – 7) (5x – 3)6 90. (5x – 3)4arrow_forwardFor Exercises 115–120, factor the expressions over the set of complex numbers. For assistance, consider these examples. • In Section R.3 we saw that some expressions factor over the set of integers. For example: x - 4 = (x + 2)(x – 2). • Some expressions factor over the set of irrational numbers. For example: - 5 = (x + V5)(x – V5). To factor an expression such as x + 4, we need to factor over the set of complex numbers. For example, verify that x + 4 = (x + 2i)(x – 2i). 115. а. х - 9 116. а. х? - 100 117. а. х - 64 b. x + 9 b. + 100 b. x + 64 118. а. х — 25 119. а. х— 3 120. а. х — 11 b. x + 25 b. x + 3 b. x + 11arrow_forward
- Exercises 141–143 will help you prepare for the material covered in the next section. In each exercise, factor the polynomial. (You'll soon be learning techniques that will shorten the factoring process.) 141. x? + 14x + 49 142. x? – 8x + 16 143. х2 — 25 (or x? + 0х — 25)arrow_forwardIn Exercises 126–129, determine whether each statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement. 126. Once a GCF is factored from 6y – 19y + 10y“, the remaining trinomial factor is prime. 127. One factor of 8y² – 51y + 18 is 8y – 3. 128. We can immediately tell that 6x? – 11xy – 10y? is prime because 11 is a prime number and the polynomial contains two variables. 129. A factor of 12x2 – 19xy + 5y² is 4x – y.arrow_forwardIn Exercises 133–136, factor each polynomial completely. Assume that any variable exponents represent whole numbers. 133. y + x + x + y 134. 36x2" – y2n 135. x* 3n 12n 136. 4x2" + 20x"y" + 25y2marrow_forward
- Make Sense? In Exercises 135–138, determine whether each statement makes sense or does not make sense, and explain your reasoning. 135. I use the same ideas to multiply (V2 + 5) (V2 + 4) that I did to find the binomial product (x + 5)(x + 4). 136. I used a special-product formula and simplified as follows: (V2 + V5)? = 2 + 5 = 7. 137. In some cases when I multiply a square root expression and its conjugate, the simplified product contains a radical. 138. I use the fact that 1 is the multiplicative identity to both rationalize denominators and rewrite rational expressions with a common denominator.arrow_forwardIn Exercises 112–114, multiply or divide as indicated. x* + 6x + 9 x + 3 112. 3x + x 6x + 2 113. x2 - 4 x - 2 x2 - 1 X - 1 x? - 5x - 24 x2 - 10x + 16 114. x? - x - 12 x? + x - 6arrow_forwardIn Exercises 115–116, express each polynomial in standard form-that is, in descending powers of x. a. Write a polynomial that represents the area of the large rectangle. b. Write a polynomial that represents the area of the small, unshaded rectangle. c. Write a polynomial that represents the area of the shaded blue region. 115. -x + 9- -x +5- x + 3 x + 15 -x + 4- x + 2 116. x + 3 x + 1arrow_forward
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