Help !!! What is the equivalent exponential expression for the radical expression below

Answer:
A. [tex] \huge \purple { {(2 + 6)}^{ \frac{1}{2} } }[/tex]
Step-by-step explanation:
[tex] \huge \sqrt{2 + 6} \\ \\ \huge \red{= {(2 + 6)}^{ \frac{1}{2} } }[/tex]