Table of contents

0. Review of Algebra4h 18m
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 22m
10. Combinatorics & Probability1h 45m

0. Review of Algebra

Simplifying Radical Expressions

College Algebra

0. Review of Algebra

Simplifying Radical Expressions

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1:19 minutes

Problem 65

Textbook Question

Use the rules for radicals to perform the indicated operations. Assume all variable expressions represent positive real numbers. ∛√4

Verified step by step guidance

Recognize that the expression involves both a square root and a cube root: \( \sqrt{4} \) and \( \sqrt[3]{x} \).

Rewrite the square root \( \sqrt{4} \) as an exponent: \( 4^{1/2} \).

Combine the exponents for the nested radicals: \( (4^{1/2})^{1/3} \).

Apply the power of a power property: \( 4^{(1/2) \cdot (1/3)} \).

Simplify the exponent by multiplying: \( 4^{1/6} \).

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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, cube roots, and higher-order roots. They are represented using the radical symbol (√) or fractional exponents. Understanding how to manipulate these expressions is crucial for simplifying and performing operations on them.

Properties of Exponents

The properties of exponents govern how to simplify expressions involving powers and roots. For instance, the rule that states a^(m/n) is equivalent to the n-th root of a raised to the m-th power is essential when dealing with radical expressions. This concept helps in converting between radical and exponential forms.

Simplifying Radicals

Simplifying radicals involves reducing them to their simplest form, which often includes factoring out perfect squares or cubes. This process is important for performing operations like addition, subtraction, or multiplication of radical expressions, ensuring that the final answer is expressed in the most concise manner.

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