which of the following is an equivalent expression for \frac{5^{\frac{1}{2}}}{\sqrt[3]{125}} when simplified using exponent properties

1 answer

To simplify the expression \(\frac{5^{\frac{1}{2}}}{\sqrt[3]{125}}\) using exponent properties, we first rewrite \(\sqrt[3]{125}\) in terms of exponents.

We know that \(125 = 5^3\). Therefore, we can express \(\sqrt[3]{125}\) as follows:

\[ \sqrt[3]{125} = \sqrt[3]{5^3} = 5^{3 \cdot \frac{1}{3}} = 5^1 = 5 \]

Now, we can substitute this back into the original expression:

\[ \frac{5^{\frac{1}{2}}}{\sqrt[3]{125}} = \frac{5^{\frac{1}{2}}}{5} \]

Using the properties of exponents, specifically \(\frac{a^m}{a^n} = a^{m-n}\), we can simplify this fraction:

\[ \frac{5^{\frac{1}{2}}}{5} = \frac{5^{\frac{1}{2}}}{5^1} = 5^{\frac{1}{2} - 1} = 5^{\frac{1}{2} - \frac{2}{2}} = 5^{-\frac{1}{2}} \]

Thus, the equivalent expression for \(\frac{5^{\frac{1}{2}}}{\sqrt[3]{125}}\) when simplified using exponent properties is:

\[ 5^{-\frac{1}{2}} \]

Alternatively, this can also be expressed as:

\[ \frac{1}{5^{\frac{1}{2}}} = \frac{1}{\sqrt{5}} \]

Both \(5^{-\frac{1}{2}}\) and \(\frac{1}{\sqrt{5}}\) are equivalent expressions to the original fraction.