Match the rational exponent expression in Column I with the equivalent radical expression in Column II. Assume that x is not 0. (c) 3x-1/3
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Identify the given expression: \$3x^{-\frac{1}{3}}$.
Recall that a rational exponent \(x^{\frac{m}{n}}\) can be rewritten as a radical: \(x^{\frac{m}{n}} = \sqrt[n]{x^m}\).
Apply this rule to the term \(x^{-\frac{1}{3}}\): rewrite it as \(\sqrt[3]{x^{-1}}\).
Remember that a negative exponent means the reciprocal, so \(\sqrt[3]{x^{-1}} = \frac{1}{\sqrt[3]{x}}\).
Combine the coefficient 3 with the rewritten radical expression to get the equivalent radical form: \(\frac{3}{\sqrt[3]{x}}\).
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
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.
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 means x^(-1/3) is 1 over the cube root of x.
Expressions with rational exponents can be rewritten as radicals and vice versa. For example, x^(1/3) is equivalent to the cube root of x (∛x), and x^(-1/3) is the reciprocal of the cube root of x, facilitating easier manipulation and understanding.