Ответ:

  1. 9^(2/5) · 27^(2/5) = (9 · 27)^(2/5) = 243^(2/5) = (3⁵)^(2/5) = 9.
  2. 7^(2/3) · 49^(2/3) = (7 · 49)^(2/3) = 343^(2/3) = 49.
  3. 144^(8/4) : 9^(8/4) = (144 : 9)² = 16² = 256.
  4. 150^(3/2) : 6^(3/2) = (150 : 6)^(3/2) = 25^(3/2) = 125.