For this expression, the variables are equal to:
<h3>What is an expression?</h3>
An expression is a mathematical equation which shows the relationship existing between two or more numerical quantities or variables.
<u>Given the following expression:</u>
![\sqrt[4]{15^{7} }](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B15%5E%7B7%7D%20%7D)
From the law of indices, we have:
![\sqrt[c]{a^{b} } =a^{\frac{b}{c} } \\\\\sqrt[4]{15^{7} } =15^{\frac{7}{4} }](https://tex.z-dn.net/?f=%5Csqrt%5Bc%5D%7Ba%5E%7Bb%7D%20%7D%20%3Da%5E%7B%5Cfrac%7Bb%7D%7Bc%7D%20%7D%20%5C%5C%5C%5C%5Csqrt%5B4%5D%7B15%5E%7B7%7D%20%7D%20%3D15%5E%7B%5Cfrac%7B7%7D%7B4%7D%20%7D)
For this expression, the variables are:
Read more on expressions here: brainly.com/question/12819629
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