Question

Срочно!!!!!!!!!!!!!!!

Answer 1

1)$\sqrt[3]{\frac{135}{5} } =\sqrt[3]{27} =\sqrt[3]{3^{3} } =3$

2)$\sqrt[5]{\frac{4}{128} } =\sqrt[5]{\frac{1}{32} } =\sqrt[5]{\frac{1}{2^{5} } } =\frac{1}{2}$

4)

$\displaystyle \sqrt[8]{\frac{20^{30} *7^{12} }{20^{6}* 7^{4} } } = \displaystyle \sqrt[8]{\frac{20^{30} *7^{8} }{20^{6} } } = \displaystyle \sqrt[8]{\frac{20^{12} *7^{8} }{1 } } = \displaystyle 7\sqrt[8]{20^{8} *20^{4} } =7*20\sqrt[8]{(5*2^{2})^{4} }=140\sqrt[8]{5^{4} *2^{8} } =140*2\sqrt[8]{625} = 280\sqrt[8]{625}$