Four examples of rationalizing denominators is given in this video. Square roots, cube roots, two terms, and conjugates are discussed.

1. Like Terms
2. Combining Like Terms
3. Simplifying Algebraic Expressions
4. Translating Word Problems
5. Solving Linear Equations (Part I)
6. Solving Linear Equations (Part II)
7. Functions and Relations
8. Function Domain and Range
9. Functions: Notation and Connection with Linear Graphs
10. Graphing and Finding x and y Intercepts
11. Composition of Functions
12. Vertical Line Test
13. Evaluate a Function From a Graph
14. Find an Inverse and Check
15. Function Evaluation and Word Problems
16. Distance Formula
17. Meaning of Slope
18. Derivation of the Slope Formula
19. Parallel and Perpendicular Lines and the Implications on Slope
20. Derivation of the Equation of a Line
21. Finding the Slope of a Line Between Two Points
22. Finding an Equation of a Line Using the y=mx+b Form
23. Graphing Equations in y=mx+b Form
24. Finding the Equation of a Line With a Point and a Slope
25. Graphing a Line Using a Point and a Slope
26. Checking If A Point Is A Solution To A System
27. Vertical and Horizontal Lines and Their Graphs
28. Three Types of Systems
29. Solving a System by Addition/Elimination (Part I)
30. Solving a System by Addition/Elimination (Part II)
31. Solving a System by Addition/Elimination (Part III)
32. Solving a System by Substitution (Part I)
33. Solving a System by Substitution (Part II)
34. Solving a System by Graphing
35. System of Three Variables
36. Standard Form to Preferred Form for a Quadratic
37. Solving Equations in Quadratic Form
38. Graphing Quadratics Using Preferred Form
39. Derivation of the Quadratic Formula
40. Using The Quadratic Formula
41. The Quadratic Formula
42. The Discriminant
43. Complete the Square
44. Pythagorean Theorem Application
45. Derivation of the Vertex Formula
46. Introduction to Polynomials
47. Add and Subtract Polynomials
48. Multiplying Polynomials
49. Multiplying Polynomials Using Special Products
50. Using the General Factoring Strategy
51. Factoring Polynomials: Special Forms (Part I)
52. Factoring Polynomials: Challenging Ones (Part II)
53. Factoring Trinomials: Leading Coefficient of 1 (Part I)
54. Factoring Trinomials: AC Factoring Method (Part II)
55. Rational Inequalities
56. Polynomial Inequalities
57. Absolute Inequalities
58. Systems of Inequalities
59. Compound Inequalities (Part I)
60. Compound Inequalities (Part II)
61. Find the Domain of a Rational Expression
62. Adding and Subtracting Rational Expressions
63. Multiplying and Dividing Rational Expressions
64. Solving Rational Equations
65. Complex Rational Expressions
66. Rationalizing Denominators
67. Domain of Radical Functions
68. Addition and Subtraction of Radicals
69. Multiplying Radicals
70. Product and Quotient Rule for Radicals
71. Solving Radical Equations (Part I)
72. Solving Radical Equations (Part II)
73. Operations with Complex Numbers
74. Imaginary Numbers with Evaluation
75. Exponents (Part I)
76. Exponents (Part II)
77. Exponent Properties
78. Examples of Exponents
79. Properties of Negative Exponents
80. Exponents with Integers
81. Rational Exponents
82. Solving Exponent Equations
83. Graphing Exponential Functions
84. Square Root Property
85. Square Root of the Answer
86. Why The Absolute Value When Simplifying Roots
87. Simplifying Roots with Higher Indexes
88. Find the General Form for an Ellipse
89. Graphing The Hyperbola
90. Graphing the Ellipse
91. Graphing Circles
92. Determine the Form for Conics
93. Logarithmic Equations
94. Expanding Logarithms
95. Domain of a Logarithm
96. Combine Logarithms
97. Log Properties
98. Introduction to Series