Ответ:

  1. \(\left(\frac{m^6}{n^3}\right)^2=\frac{m^{12}}{n^6}\).
  2. \(\left(\frac{3a}{2b^2}\right)^4=\frac{81a^4}{16b^8}\).
  3. \(\left(-\frac{5a^3b^4}{3c^5d^7}\right)^3=-\frac{125a^9b^{12}}{27c^{15}d^{21}}\).
  4. \(\left(-\frac{9x^5y^2}{4z^4}\right)^2\cdot\left(-\frac{2z^3}{3x^4y^{10}}\right)^3=-\frac{3z}{2x^2y^{26}}\).

Ответ: 1) \(\frac{m^{12}}{n^6}\); 2) \(\frac{81a^4}{16b^8}\); 3) \(-\frac{125a^9b^{12}}{27c^{15}d^{21}}\); 4) \(-\frac{3z}{2x^2y^{26}}\).