Ответ:

  1. \(5^{-4}\cdot5^6=5^2=25\).
  2. \(4^5\cdot4^{-7}=4^{-2}=\frac1{16}\).
  3. \(3^8\cdot3^{-5}\cdot3^{-6}=3^{-3}=\frac1{27}\).
  4. \(6^9:6^{11}=6^{-2}=\frac1{36}\).
  5. \(7^{-4}:7^{-4}=7^0=1\).
  6. \(8^{-6}:8^{-7}=8^1=8\).
  7. \((3^{-2})^{-2}=3^4=81\).
  8. \((0.1^{-3})^{-1}=0.1^3=0.001\).
  9. \((0.2^{-2})^3=5^6=15625\).
  10. \((7^2)^{-3}\cdot7^4=7^{-6+4}=7^{-2}=\frac1{49}\).
  11. \(5^{-3}\cdot(5^{-2})^{-3}=5^{-3}\cdot5^6=5^3=125\).

Ответ: 25; \(\frac1{16}\); \(\frac1{27}\); \(\frac1{36}\); 1; 8; 81; 0.001; 15625; \(\frac1{49}\); 125.