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
2:23 minutes
Problem 18a
Textbook Question
Textbook QuestionUse the product rule to simplify the expressions in Exercises 13–22. In Exercises 17–22, assume that variables represent nonnegative real numbers. √10x⋅√ 8x
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Product Rule of Exponents
The product rule of exponents states that when multiplying two expressions with the same base, you can add their exponents. For example, a^m * a^n = a^(m+n). This rule is essential for simplifying expressions involving powers, particularly when dealing with variables and constants in algebra.
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Square Roots
A square root of a number x is a value that, when multiplied by itself, gives x. The square root is denoted as √x. Understanding how to manipulate square roots, including the property that √a * √b = √(a*b), is crucial for simplifying expressions that involve square roots, especially in algebraic contexts.
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Nonnegative Real Numbers
Nonnegative real numbers are all real numbers that are either positive or zero. This concept is important in algebra as it restricts the domain of variables, ensuring that operations like taking square roots yield real results. In the context of the given expression, it implies that the variables involved cannot take negative values, which affects the simplification process.
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