Discover new information and get your questions answered with IDNLearn.com. Our experts are available to provide accurate, comprehensive answers to help you make informed decisions about any topic or issue you encounter.

Which expression is equivalent to [tex]\sqrt[3]{x^5 y}[/tex]?

A. [tex]x^{\frac{5}{3}} y[/tex]
B. [tex]x^{\frac{5}{3}} y^{\frac{1}{3}}[/tex]
C. [tex]x^{\frac{3}{5}} y[/tex]
D. [tex]x^{\frac{3}{5}} y^3[/tex]


Sagot :

To determine which expression is equivalent to [tex]\(\sqrt[3]{x^5 y}\)[/tex], let's go through the problem step-by-step.

1. Understanding the initial expression:
The given expression is the cube root of [tex]\(x^5 y\)[/tex]. In mathematical terms, this is written as:
[tex]\[ \sqrt[3]{x^5 y} \][/tex]

2. Using the properties of exponents and radicals:
We can rewrite the cube root expression using fractional exponents. The cube root of any expression [tex]\(a\)[/tex] can be written as [tex]\(a^{\frac{1}{3}}\)[/tex].

Therefore:
[tex]\[ \sqrt[3]{x^5 y} = (x^5 y)^{\frac{1}{3}} \][/tex]

3. Separating the components inside the parentheses:
We can use the property of exponents that states [tex]\((ab)^n = a^n b^n\)[/tex]. Applying this to our expression:
[tex]\[ (x^5 y)^{\frac{1}{3}} = (x^5)^{\frac{1}{3}} \cdot (y)^{\frac{1}{3}} \][/tex]

4. Calculating the individual exponents:
- For [tex]\(x^5\)[/tex]:
[tex]\[ (x^5)^{\frac{1}{3}} = x^{5 \cdot \frac{1}{3}} = x^{\frac{5}{3}} \][/tex]
- For [tex]\(y\)[/tex]:
[tex]\[ (y)^{\frac{1}{3}} = y^{\frac{1}{3}} \][/tex]

5. Combining the results:
The expression simplifies to:
[tex]\[ x^{\frac{5}{3}} \cdot y^{\frac{1}{3}} \][/tex]

Thus, the expression [tex]\(x^{\frac{5}{3}} y^{\frac{1}{3}}\)[/tex] is equivalent to [tex]\(\sqrt[3]{x^5 y}\)[/tex].

Therefore, the correct answer is:
[tex]\[ x^{\frac{5}{3}} y^{\frac{1}{3}} \][/tex]