Table of contents
- 0. Review of College Algebra4h 43m
- 1. Measuring Angles39m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
0. Review of College Algebra
Rationalizing Denominators
1:51 minutes
Problem 87a
Textbook Question
Textbook QuestionAdd or subtract, as indicated. See Example 6. 5√3 - √3
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Radical Expressions
Radical expressions involve roots, such as square roots or cube roots. In this context, √3 represents the square root of 3. Understanding how to manipulate these expressions, including addition and subtraction, is crucial for simplifying them correctly.
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Like Terms
Like terms are terms that contain the same variable raised to the same power or, in the case of radicals, the same root. For example, 5√3 and √3 are like terms because they both involve the square root of 3. Recognizing and combining like terms is essential for simplifying expressions.
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Coefficient
A coefficient is a numerical factor in a term. In the expression 5√3, the coefficient is 5, indicating how many times the radical is counted. When performing operations with radical expressions, it is important to manage these coefficients correctly to arrive at the correct simplified form.
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