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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 3b

Match the rational exponent expression in Column I with the equivalent radical expression in Column II. Assume that x is not 0. ( -3x )-1/3
Two columns of rational exponent expressions labeled I and matching radical expressions labeled II for a math matching exercise.

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1
Recall that a rational exponent of the form \(a^{m/n}\) can be rewritten as a radical: \(a^{m/n} = \left( \sqrt[n]{a} \right)^m = \sqrt[n]{a^m}\).
Identify the base and the rational exponent in the expression \((-3x)^{-1/3}\). Here, the base is \(-3x\) and the exponent is \(-\frac{1}{3}\).
Rewrite the expression using the radical form: \((-3x)^{-1/3} = \frac{1}{(-3x)^{1/3}}\) because a negative exponent means the reciprocal.
Express \((-3x)^{1/3}\) as a cube root: \((-3x)^{1/3} = \sqrt[3]{-3x}\).
Combine the steps to write the original expression as \(\frac{1}{\sqrt[3]{-3x}}\), which is the equivalent radical expression.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
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주요 개념

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

Rational Exponents

Rational exponents express roots and powers simultaneously, where the numerator indicates the power and the denominator indicates the root. For example, x^(m/n) means the nth root of x raised to the mth power, i.e., (√[n]{x})^m.
추천 영상:
04:06
Rational Exponents

Negative Exponents

A negative exponent indicates the reciprocal of the base raised to the corresponding positive exponent. For instance, x^(-a) equals 1 divided by x^a, which flips the base to the denominator.
추천 영상:
6:37
Zero and Negative Rules

Converting Rational Exponents to Radical Expressions

To convert a rational exponent to a radical expression, rewrite x^(m/n) as the nth root of x raised to the mth power: x^(m/n) = (√[n]{x})^m. Applying this helps match expressions with radicals and rational exponents.
추천 영상:
04:06
Rational Exponents