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Studentka2010 [4]
3 years ago
7

8.Rewrite the expression using rational exponents.

Mathematics
1 answer:
Mama L [17]3 years ago
7 0

Answer:

Option B is the correct option.

Step-by-step explanation:

Given the expression

\frac{\sqrt[3]{x^5}}{\sqrt[3]{x^7}}

Apply radical rule:

\frac{\sqrt[n]{a}}{\sqrt[n]{b}}=\sqrt[n]{\frac{a}{b}}

so

\frac{\sqrt[3]{x^5}}{\sqrt[3]{x^7}}=\sqrt[3]{\frac{x^5}{x^7}}

Apply radical rule:

\frac{x^a}{x^b}=x^{a-b}

so

   =\sqrt[3]{\frac{1}{x^2}}         ∵  \frac{x^5}{x^7}=x^{5-7}

   =\frac{1}{x^{\frac{2}{3}}}

Therefore, option B is the correct option.

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