Question 156935
Remember, *[Tex \LARGE \sqrt[n]{x^m}=x^{\frac{m}{n}}]



So in this case, 
*[Tex \LARGE \left(\sqrt[7]{3x^{2}y}\right)^{11}=\left(\left(3x^{2}y\right)^{\frac{1}{7}}\right)^{11}=\left(3x^{2}y\right)^{\frac{11}{7}}]