To simplify the expression \( x^{1/6} \cdot x^{1/6} \), you can use the property of exponents that states \( a^m \cdot a^n = a^{m+n} \).
In this case:
\[ x^{1/6} \cdot x^{1/6} = x^{(1/6) + (1/6)} = x^{2/6} = x^{1/3} \]
Now, \( x^{1/3} \) can also be written in radical form as:
\[ x^{1/3} = \sqrt[3]{x} \]
This corresponds to the response:
\[ \text{root index 3 } \sqrt{x} \]
So the correct answer is:
\(\text{root index 3 Start Root x End Root}\)