Which exponential expression is equivalent to $$(^5\sqrt{y})^{4}$$ ?

<div id="id_cont_display" class="markdown-body editormd-html-preview"><textarea>Which exponential expression is equivalent to $$(^5\sqrt{y})^{4}$$ ?</textarea>Which exponential expression is equivalent to <math><semantics><mrow><msup><mo>(</mo><mn>5</mn></msup><msqrt><mrow><mi>y</mi></mrow></msqrt><msup><mo>)</mo><mrow><mn>4</mn></mrow></msup></mrow><annotation encoding="application/x-tex">(^5\sqrt{y})^{4}</annotation></semantics></math>(​5​​√​y​​​)​4​​ ?
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