Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
0. Review of Algebra
Radical Expressions
1: minutes
Problem 117a
Textbook Question
Textbook QuestionPerform the indicated operations. Assume all variables represent positive real numbers. 4√3(√7 - 2√11)
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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, the expression includes square roots of numbers, which can be simplified or manipulated according to algebraic rules. Understanding how to simplify radical expressions is crucial for performing operations like addition, subtraction, or multiplication.
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Distributive Property
The distributive property states that a(b + c) = ab + ac, allowing us to multiply a single term by each term within a parenthesis. In the given expression, applying the distributive property is essential to correctly multiply 4√3 by each term in the expression (√7 - 2√11), ensuring all parts are accounted for in the final result.
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Combining Like Terms
Combining like terms involves adding or subtracting terms that have the same variable and exponent. In the context of radical expressions, this means simplifying the results of operations to group terms with the same radical part. This step is important for presenting the final answer in its simplest form, making it easier to interpret.
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