Ответ:

  1. (1/7)−3 · (1/7) = 73/7 = 72 = 49.
  2. (−1/5) · (−1/5)−4 = (−1/5) · 625 = −125.
  3. 0,37 · 0,3−10 = 0,3−3 = (10/3)3 = 1000/27.
  4. 17−5 · 173 · 17 = 17−5+3+1 = 17−1 = 1/17.