Ответ:

[tex] 1) \\ \sqrt[3]{64 {b}^{6} {z}^{9} } = 4 {b}^{2} {z}^{3} \\ 2) \\ \sqrt[5]{32 {x}^{6} y} \div \sqrt[5]{x {y}^{11} } = \sqrt[5]{ \frac{32 {x}^{6}y }{x {y}^{11} } } \\ \sqrt[5]{ \frac{32 {x}^{5} }{ {y}^{10} } } = \frac{2x}{ {y}^{2} } \\ 3) \\ \sqrt[3]{1 \frac{2}{3} } \times \sqrt[3]{2 \frac{7}{9} } = \sqrt[3]{1 \frac{2}{3} \times 2 \frac{7}{9} } = \sqrt[3]{ \frac{125}{27} } \\ = \frac{5}{3} [/tex]