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

검증된 단계별 안내

Recognize that the expression involves nested radicals: the cube root of the square root of 4, which can be written as \(\sqrt[3]{\sqrt{4}}\).

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

Substitute this back into the original expression: \(\sqrt[3]{4^{\frac{1}{2}}}\).

Use the rule for radicals that \(\sqrt[n]{a^m} = a^{\frac{m}{n}}\) to combine the radicals: \(\left(4^{\frac{1}{2}}\right)^{\frac{1}{3}} = 4^{\frac{1}{2} \times \frac{1}{3}}\).

Multiply the exponents: \(4^{\frac{1}{6}}\), which is the simplified form of the original expression.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

도움이 되었나요?

주요 개념

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

Radical Expressions and Notation

Radical expressions involve roots such as square roots (√) and cube roots (∛). The index of the root indicates the degree, with √ representing a square root (index 2) and ∛ representing a cube root (index 3). Understanding how to interpret and write these expressions is fundamental to manipulating them.

Rules for Radicals (Product and Power Rules)

The rules for radicals allow simplification and combination of roots. The product rule states that the root of a product equals the product of the roots, e.g., √a * √b = √(ab). The power rule lets you rewrite radicals as fractional exponents, such as √a = a^(1/2) and ∛a = a^(1/3), facilitating easier operations.

Converting Between Radical and Exponential Forms

Expressing radicals as fractional exponents helps simplify complex expressions. For example, √4 can be written as 4^(1/2), and ∛(4^(1/2)) becomes 4^(1/2 * 1/3) = 4^(1/6). This conversion is key to performing operations like multiplication or composition of radicals efficiently.