• Home
  • Textbooks
  • Elementary Algebra
  • Radical Expressions and Equations

Elementary Algebra

John Redden

Chapter 8

Radical Expressions and Equations - all with Video Answers

Educators

KT

Section 1

Radicals

00:21

Problem 1

Simplify.
$$
81--\sqrt{ }
$$

Nick Johnson
Nick Johnson
Numerade Educator
00:11

Problem 2

Simplify.
$$
100--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:08

Problem 3

Simplify.
$$
64--\sqrt{ }
$$

Amy Jiang
Amy Jiang
Numerade Educator
00:13

Problem 4

Simplify.
$$
121--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:13

Problem 5

Simplify.
$$
0 \sqrt{ }
$$

Amy Jiang
Amy Jiang
Numerade Educator
00:11

Problem 6

Simplify.
$$
1 \sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:18

Problem 7

Simplify.
$$
0.25--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:22

Problem 8

Simplify.
$$
0.01--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:25

Problem 9

Simplify.
$$
1.21--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:22

Problem 10

Simplify.
$$
2.25---\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:12

Problem 11

Simplify.
$$
14--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:09

Problem 12

Simplify.
$$
136-\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:15

Problem 13

Simplify.
$$
2516--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:15

Problem 14

Simplify.
$$
925--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:24

Problem 15

Simplify.
$$
-25-\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
View

Problem 16

Simplify.
$$
-9---\sqrt{ }
$$

Julia Finneyfrock
Julia Finneyfrock
Numerade Educator
00:43

Problem 17

Simplify.
$$
-36--\sqrt{ }
$$

AG
Ankit Gupta
Numerade Educator
01:17

Problem 18

Simplify.
$$
-81-\sqrt{ }
$$

AG
Ankit Gupta
Numerade Educator
00:15

Problem 19

Simplify.
$$
-100---\sqrt{ }
$$

Cory Kuzinski
Cory Kuzinski
Numerade Educator
00:21

Problem 20

Simplify.
$$
-1 \sqrt{ }
$$

AG
Ankit Gupta
Numerade Educator
00:13

Problem 21

Simplify.
$$
27--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:11

Problem 22

Simplify.
$$
27--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:10

Problem 23

Simplify.
$$
64--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:42

Problem 24

Simplify.
$$
8 \sqrt{3}
$$

Amy Jiang
Amy Jiang
Numerade Educator
00:17

Problem 25

Simplify.
$$
18--\sqrt{3}
$$

Amrita Bhasin
Amrita Bhasin
Numerade Educator
00:18

Problem 26

Simplify.
$$
164--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:13

Problem 27

Simplify.
$$
827--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:30

Problem 28

Simplify.
$$
64125--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:27

Problem 29

Simplify.
$$
0.001---\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:14

Problem 30

Simplify.
$$
1,000---\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:13

Problem 31

Simplify.
$$
-1---\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:42

Problem 32

Simplify.
$$
-8---\sqrt{3}
$$

Amy Jiang
Amy Jiang
Numerade Educator
00:16

Problem 33

Simplify.
-27-1-\sqrt{3}

James Kiss
James Kiss
Numerade Educator
00:14

Problem 34

Simplify.
$$
-64--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:17

Problem 35

Simplify.
$$
-18--\sqrt{3}
$$

Amrita Bhasin
Amrita Bhasin
Numerade Educator
00:31

Problem 36

Simplify.
$$
-2764---\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:25

Problem 37

Simplify.
$$
-827---\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:21

Problem 38

Simplify.
$$
-1125---\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:14

Problem 39

Simplify.
$$
81--\sqrt{4}
$$

James Kiss
James Kiss
Numerade Educator
00:15

Problem 40

Simplify.
$$
625--\sqrt{1}
$$

James Kiss
James Kiss
Numerade Educator
00:24

Problem 41

Simplify.
$$
16--\sqrt{4}
$$

Heather Zimmers
Heather Zimmers
Numerade Educator
00:12

Problem 42

Simplify.
$$
10,000---\sqrt{4}
$$

James Kiss
James Kiss
Numerade Educator
00:12

Problem 43

Simplify.
$$
32--\sqrt{5}
$$

James Kiss
James Kiss
Numerade Educator
00:12

Problem 44

Simplify.
$$
1 \sqrt{5}
$$

James Kiss
James Kiss
Numerade Educator
00:14

Problem 45

Simplify.
$$
243--\sqrt{5}
$$

James Kiss
James Kiss
Numerade Educator
00:15

Problem 46

Simplify.
$$
100,000--\sqrt{5}
$$

James Kiss
James Kiss
Numerade Educator
00:16

Problem 47

Simplify.
$$
-16-\sqrt{4}
$$

James Kiss
James Kiss
Numerade Educator
00:16

Problem 48

Simplify.
$$
-1 \sqrt{6}
$$

James Kiss
James Kiss
Numerade Educator
00:19

Problem 49

Simplify.
$$
-32--\sqrt{5}
$$

James Kiss
James Kiss
Numerade Educator
00:16

Problem 50

Simplify.
$$
-1--\sqrt{5}
$$

James Kiss
James Kiss
Numerade Educator
00:21

Problem 51

Simplify.
$$
-1---\sqrt{ }
$$

AG
Ankit Gupta
Numerade Educator
00:19

Problem 52

Simplify.
$$
-16--\sqrt{4}
$$

James Kiss
James Kiss
Numerade Educator
00:22

Problem 53

Simplify.
$$
-5-27--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:18

Problem 54

Simplify.
$$
-2-8--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:18

Problem 55

Simplify.
$$
5-1,000----\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:21

Problem 56

Simplify.
$$
3-243---\sqrt{5}
$$

James Kiss
James Kiss
Numerade Educator
00:13

Problem 57

Simplify.
$$
10-16--\sqrt{4}
$$

James Kiss
James Kiss
Numerade Educator
00:18

Problem 58

Simplify.
$$
2-64---\sqrt{6}
$$

James Kiss
James Kiss
Numerade Educator
00:11

Problem 59

Simplify.
$$
325--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:08

Problem 60

Simplify.
$$
64 \sqrt{ }
$$

Amy Jiang
Amy Jiang
Numerade Educator
00:14

Problem 61

Simplify.
$$
227-\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:22

Problem 62

Simplify.
$$
8243---\sqrt{5}
$$

James Kiss
James Kiss
Numerade Educator
00:17

Problem 63

Simplify.
$$
-78 \sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:18

Problem 64

Simplify.
$$
-4625--\sqrt{4}
$$

James Kiss
James Kiss
Numerade Educator
00:18

Problem 65

Simplify.
$$
6100,000----\sqrt{5}
$$

James Kiss
James Kiss
Numerade Educator
00:14

Problem 66

Simplify.
$$
5128--\sqrt{7}
$$

James Kiss
James Kiss
Numerade Educator
00:12

Problem 67

Simplify.
$$
32--\sqrt{1}
$$

James Kiss
James Kiss
Numerade Educator
00:11

Problem 68

Simplify.
$$
250--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:53

Problem 69

Simplify.
$$
80--\sqrt{ }
$$

AG
Ankit Gupta
Numerade Educator
00:28

Problem 70

Simplify.
$$
150---\sqrt{ }
$$

Deborah Ferry
Deborah Ferry
Numerade Educator
00:12

Problem 71

Simplify.
$$
160--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:59

Problem 72

Simplify.
$$
60--\sqrt{ }
$$

Kimberly Konzack
Kimberly Konzack
Numerade Educator
View

Problem 73

Simplify.
$$
175---\sqrt{ }
$$

SM
Sara Mendoza
Numerade Educator
00:30

Problem 74

Simplify.
$$
216--\sqrt{ }
$$

Heather Zimmers
Heather Zimmers
Numerade Educator
00:21

Problem 75

Simplify.
$$
5112---\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:19

Problem 76

Simplify.
$$
5112--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:19

Problem 77

Simplify.
$$
5049--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:43

Problem 78

Simplify.
$$
-2120--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:22

Problem 79

Simplify.
$$
-3162--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:16

Problem 80

Simplify.
$$
89--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:21

Problem 81

Simplify.
$$
45121---\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:21

Problem 82

Simplify.
$$
9681--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:18

Problem 83

Simplify.
54--\sqrt{3}

James Kiss
James Kiss
Numerade Educator
00:17

Problem 84

Simplify.
$$
24--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:18

Problem 85

Simplify.
$$
48--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:12

Problem 86

Simplify.
$$
81--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:12

Problem 87

Simplify.
$$
40--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:13

Problem 88

Simplify.
$$
120--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:16

Problem 89

Simplify.
$$
162--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:18

Problem 90

Simplify.
$$
500--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:33

Problem 91

Simplify.
$$
54125---\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:36

Problem 92

Simplify.
$$
40343---\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:37

Problem 93

Simplify.
$$
5-48---\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:25

Problem 94

Simplify.
$$
2-108---\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:33

Problem 95

Simplify.
$$
896--\sqrt{4}
$$

James Kiss
James Kiss
Numerade Educator
00:21

Problem 96

Simplify.
$$
7162--\sqrt{4}
$$

James Kiss
James Kiss
Numerade Educator
00:15

Problem 97

Simplify.
160--\sqrt{5}

James Kiss
James Kiss
Numerade Educator
00:16

Problem 98

Simplify.
$$
486--\sqrt{5}
$$

James Kiss
James Kiss
Numerade Educator
00:28

Problem 99

Simplify.
$$
224243---\sqrt{5}
$$

James Kiss
James Kiss
Numerade Educator
00:17

Problem 100

Simplify.
532--\sqrt{5}

James Kiss
James Kiss
Numerade Educator
00:22

Problem 101

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
$$
8 \sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:19

Problem 102

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
$$
200--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:24

Problem 103

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
$$
45--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:24

Problem 104

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
$$
72--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:22

Problem 105

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
$$
34--\sqrt{1}
$$

James Kiss
James Kiss
Numerade Educator
00:18

Problem 106

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
$$
59-\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:27

Problem 107

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
$$
3225-\sqrt{1}
$$

James Kiss
James Kiss
Numerade Educator
00:37

Problem 108

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
4849--\sqrt{ }

James Kiss
James Kiss
Numerade Educator
00:36

Problem 109

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
$$
80--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:48

Problem 110

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
$$
320--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:43

Problem 111

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
$$
48--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:33

Problem 112

Simplify. Give the exact answer and the approximate answer rounded to the nearest hundredth.
$$
270--\sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:18

Problem 113

Rewrite the following as a radical expression with coefficient $1 .$
$$
215-\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:15

Problem 114

Rewrite the following as a radical expression with coefficient $1 .$
$$
37 \sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:21

Problem 115

Rewrite the following as a radical expression with coefficient $1 .$
$$
510--\sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:16

Problem 116

Rewrite the following as a radical expression with coefficient $1 .$
$$
103 \sqrt{ }
$$

James Kiss
James Kiss
Numerade Educator
00:24

Problem 117

Rewrite the following as a radical expression with coefficient $1 .$
$$
27 \sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:22

Problem 118

Rewrite the following as a radical expression with coefficient $1 .$
$$
36 \sqrt{3}
$$

James Kiss
James Kiss
Numerade Educator
00:27

Problem 119

Rewrite the following as a radical expression with coefficient $1 .$
$$
25 \sqrt{4}
$$

James Kiss
James Kiss
Numerade Educator
00:41

Problem 120

Rewrite the following as a radical expression with coefficient $1 .$
$$
32 \sqrt{4}
$$

James Kiss
James Kiss
Numerade Educator
00:27

Problem 121

The formula for the area $A$ of a square is $A=s 2$. If the area is 18 square units, then what is the length of each side?

James Kiss
James Kiss
Numerade Educator
00:40

Problem 122

Calculate the length of a side of a square with an area of 60 square centimeters.

James Kiss
James Kiss
Numerade Educator
00:40

Problem 123

The formula for the volume $V$ of a cube is $V=s 3$. If the volume of a cube is 112 cubic units, then what is the length of each side?

James Kiss
James Kiss
Numerade Educator
00:28

Problem 124

Calculate the length of a side of a cube with a volume of 54 cubic centimeters.

James Kiss
James Kiss
Numerade Educator
00:41

Problem 125

Explain why there are two square roots for any nonzero real number.

KT
Kristen Tumminia
Numerade Educator
01:36

Problem 126

Explain why there is only one cube root for any real number.

Suman Saurav Thakur
Suman Saurav Thakur
Numerade Educator
00:22

Problem 127

What is the square root of 1 , and what is the cube root of 1 ? Explain why.

James Kiss
James Kiss
Numerade Educator
00:49

Problem 128

Explain why $-1--\sqrt{ }$ is not a real number and why $-1---\sqrt{3}$ is a real number.

Julie Silva
Julie Silva
Numerade Educator