Ответ:

  1. \(\sqrt[3]{5^3\cdot7^3}=5\cdot7=35\).
  2. \(\sqrt[4]{11^4\cdot3^4}=11\cdot3=33\).
  3. \(\sqrt[4]{0.2^4\cdot8^4}=0.2\cdot8=1.6\).
  4. \(\sqrt[3]{(1/3)^3\cdot21^3}=(1/3)\cdot21=7\).