Ответ:

  1. \((x^{-1}\cdot y^{-2})^{-2}=x^2\cdot y^4\).
  2. \(\left(\frac12\cdot a^{-3}b^3\right)^{-2}=2^2a^6b^{-6}=4a^6b^{-6}\).
  3. \((0.25m^{-2}n^2)^{-3}=0.25^{-3}m^6n^{-6}=64m^6n^{-6}\).
  4. \((a^3\cdot b^{-1})^2=a^6b^{-2}\).
  5. \((-3p^3\cdot q^{-1})^2=9p^6q^{-2}\).
  6. \(\left(\frac13x^{-3}y^2\right)^3=\frac1{27}x^{-9}y^6\).