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
4:28 minutes
Problem 14d
Textbook Question
Textbook QuestionIn Exercises 1–38, multiply as indicated. If possible, simplify any radical expressions that appear in the product. (4 + √5) (10 - 3√5)
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Multiplication of Binomials
Multiplying binomials involves applying the distributive property, often referred to as the FOIL method (First, Outside, Inside, Last). This technique helps in systematically multiplying each term in the first binomial by each term in the second binomial, ensuring that all combinations are accounted for in the final expression.
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Radical Expressions
Radical expressions contain roots, such as square roots, cube roots, etc. Simplifying these expressions often involves factoring out perfect squares or cubes, allowing for a more manageable form. Understanding how to manipulate and simplify radicals is crucial when they appear in products or sums.
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Simplification of Expressions
Simplification involves reducing an expression to its simplest form, which may include combining like terms, reducing fractions, or simplifying radicals. This process is essential in algebra to make expressions easier to work with and to prepare them for further operations or evaluations.
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