Ответ:

  1. (7⁻¹¹)²/7⁻²³ = 7⁻²²/7⁻²³ = 7.
  2. 3⁻¹¹ · (3⁵)² = 3⁻¹ = 1/3.
  3. (8⁻⁶ · 8⁻⁷)/8⁻¹² = 8⁻¹ = 1/8.
  4. (7 · 10³)² · (16 · 10⁻⁴) = 49 · 16 · 10² = 78400.
  5. (2⁻⁷ · 2¹⁷)/2⁹ = 2¹ = 2.
  6. (6²)⁻⁹/6⁻²⁰ = 6⁻¹⁸/6⁻²⁰ = 6² = 36.
  7. 7⁻⁶ · (7²)⁴ = 7² = 49.
  8. (6¹² · 11¹⁰)/66¹⁰ = (6¹² · 11¹⁰)/(6¹⁰ · 11¹⁰) = 6² = 36.