Questions: Which expression is equivalent to (4^7/3) ?
(7 sqrt[3]4)
((sqrt[7]4)^3)
((sqrt[3]4)^7)
(3 sqrt[7]4)
Transcript text: Which expression is equivalent to $4^{\frac{7}{3}}$ ?
$7 \sqrt[3]{4}$
$(\sqrt[7]{4})^{3}$
$(\sqrt[3]{4})^{7}$
$3 \sqrt[7]{4}$
Solution
Solution Steps
To solve the problem of converting the expression \(4^{\frac{7}{3}}\) into an equivalent radical form, we need to understand the relationship between rational exponents and radicals. The expression \(a^{\frac{m}{n}}\) can be rewritten as \((\sqrt[n]{a})^m\) or \(\sqrt[n]{a^m}\). Therefore, \(4^{\frac{7}{3}}\) can be expressed as \((\sqrt[3]{4})^7\).
Step 1: Understand the Expression
The given expression is \(4^{\frac{7}{3}}\). We need to convert this expression into an equivalent radical form.
Step 2: Convert Rational Exponent to Radical Form
The expression \(a^{\frac{m}{n}}\) can be rewritten as \((\sqrt[n]{a})^m\). Applying this to our expression, we have:
\[ 4^{\frac{7}{3}} = (\sqrt[3]{4})^7 \]
Step 3: Evaluate the Expression
To verify the equivalence, we calculate \((\sqrt[3]{4})^7\). The cube root of 4 is approximately \(1.5874\), and raising this to the power of 7 gives approximately \(25.3984\).
Final Answer
The expression \(4^{\frac{7}{3}}\) is equivalent to \((\sqrt[3]{4})^7\). Therefore, the correct choice is:
\[ \boxed{(\sqrt[3]{4})^7} \]