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Ch. P - Fundamental Concepts of Algebra
Blitzer - College Algebra 8th Edition
Blitzer8th EditionCollege AlgebraISBN: 9780136970514당신이 사용하는 게 아니라요?교과서 변경
1장, 문제 72

Simplify by reducing the index of the radical : y36\(\sqrt\)[6]{y^3}

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1
Recognize that the expression \( [y^3]^{1/6} \) is a radical expression written with rational exponents. The exponent \( \frac{1}{6} \) represents the sixth root.
Use the property of exponents that \( (a^m)^n = a^{m \times n} \) to combine the powers inside the expression.
Multiply the exponents: \( 3 \times \frac{1}{6} = \frac{3}{6} \). So, the expression becomes \( y^{\frac{3}{6}} \).
Simplify the fraction \( \frac{3}{6} \) to its lowest terms, which is \( \frac{1}{2} \). Now the expression is \( y^{\frac{1}{2}} \).
Recognize that \( y^{\frac{1}{2}} \) is equivalent to the square root of \( y \), or \( \sqrt{y} \). This is the simplified form with the reduced index.

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주요 개념

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

Radical and Rational Exponents

Radicals and rational exponents represent the same mathematical operation. For example, the nth root of a number can be written as that number raised to the power of 1/n. Understanding this equivalence allows simplification of expressions involving roots and fractional powers.
추천 영상:
04:06
Rational Exponents

Properties of Exponents

The properties of exponents, such as (a^m)^n = a^(m*n), are essential for simplifying expressions with powers raised to other powers. Applying these rules helps combine and reduce exponents efficiently, which is crucial in simplifying radical expressions.
추천 영상:
04:06
Rational Exponents

Reducing the Index of a Radical

Reducing the index of a radical involves rewriting the expression to have a smaller root index or converting it into a simpler form using exponent rules. This process often makes the expression easier to interpret or further simplify.
추천 영상:
05:20
Expanding Radicals