Ответ:

  1. ∛27 = 3.
  2. ⁴√81 = 3.
  3. ⁵√32 = 2.
  4. ⁶√(8²) = ⁶√64 = 2.
  5. ⁸√(16²) = ⁸√256 = 2.
  6. ∛(27²) = ∛729 = 9.