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Ch. R - Review of Basic Concepts
Lial - College Algebra 13th Edition
Lial13th EditionCollege AlgebraISBN: 9780136881063당신이 사용하는 게 아니라요?교과서 변경
1장, 문제 19

Write each root using exponents and evaluate. ⁵√32

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Recognize that the expression ⁵√32 represents the fifth root of 32, which can be rewritten using exponents as \(32^{\frac{1}{5}}\).
Express 32 as a power of a prime number. Since 32 is \$2^5$, rewrite the expression as \(\left(2^5\right)^{\frac{1}{5}}\).
Apply the power of a power property of exponents: \(\left(a^m\right)^n = a^{m \times n}\). So, \(\left(2^5\right)^{\frac{1}{5}} = 2^{5 \times \frac{1}{5}}\).
Simplify the exponent multiplication: \(5 \times \frac{1}{5} = 1\), so the expression becomes \$2^1$.
Interpret the result: \$2^1$ is simply 2, which is the value of the fifth root of 32.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Radicals and Roots

A radical expression involves roots, such as square roots or fifth roots, which represent the inverse operation of exponentiation. The fifth root of a number is the value that, when raised to the power of 5, equals the original number. Understanding how to interpret and manipulate roots is essential for solving the problem.
추천 영상:
02:20
Imaginary Roots with the Square Root Property

Exponential Notation for Roots

Roots can be expressed using fractional exponents, where the nth root of a number is written as that number raised to the power of 1/n. For example, the fifth root of 32 can be written as 32^(1/5). This notation allows the use of exponent rules to simplify and evaluate roots.
추천 영상:
02:20
Imaginary Roots with the Square Root Property

Evaluating Powers and Simplification

Evaluating expressions with exponents involves applying the rules of exponents and recognizing powers of numbers. Since 32 is 2 raised to the 5th power, rewriting 32 as 2^5 and then applying the fractional exponent simplifies the evaluation, making it easier to find the numerical value of the root.
추천 영상:
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Higher Powers of i