$$\sqrt [ 7 ] { 11 x ^ { 2 } } \sqrt [ 3 ] { 2 x ^ { 3 } }$$
$\sqrt[3]{2}\sqrt[7]{11}x^{\frac{9}{7}}$
$\frac{9\sqrt[3]{2}\sqrt[7]{11}x^{\frac{2}{7}}}{7}$
