Rewrite the radical expression as an expression with rational exponents.

[tex]\[ \sqrt[5]{x^7} \][/tex]

A. [tex]\( 7x^5 \)[/tex]
B. [tex]\( 5x^7 \)[/tex]
C. [tex]\( x^{\frac{5}{7}} \)[/tex]
D. [tex]\( x^{\frac{7}{5}} \)[/tex]



Answer :

To rewrite the given radical expression [tex]\(\sqrt[5]{x^7}\)[/tex] as an expression with rational exponents, we can use the properties of radicals and exponents.

Here's a detailed, step-by-step solution:

1. Understand the given expression: The given expression is a fifth root of [tex]\(x\)[/tex] raised to the power of 7, which can be written as:
[tex]\[ \sqrt[5]{x^7} \][/tex]

2. Use the radical to exponent conversion property: There is a property of exponents which states that [tex]\(\sqrt[b]{a^c}\)[/tex] can be rewritten as [tex]\(a^{\frac{c}{b}}\)[/tex]. This property allows us to convert a radical expression into a rational exponent.

3. Apply the property to the given expression: In our case, [tex]\(a\)[/tex] is [tex]\(x\)[/tex], [tex]\(c\)[/tex] is 7, and [tex]\(b\)[/tex] is 5. So, we rewrite [tex]\(\sqrt[5]{x^7}\)[/tex] as:
[tex]\[ x^{\frac{7}{5}} \][/tex]

Thus, the radical expression [tex]\(\sqrt[5]{x^7}\)[/tex] can be rewritten as [tex]\(x^{\frac{7}{5}}\)[/tex].

Therefore, the correct answer is:
[tex]\[ x^{\frac{7}{5}} \][/tex]