Ответ:
- \(\frac{63}{(3\sqrt{7})^2}=\frac{63}{9\cdot7}=\frac{63}{63}=1\).
- \(\frac{7(\sqrt{5})^2}{5}=\frac{7\cdot5}{5}=7\).
- \(\frac{(2\sqrt{7})^2}{14}=\frac{4\cdot7}{14}=2\).
- \(\frac{(12\sqrt{3})^2}{9}=\frac{144\cdot3}{9}=48\).
Ответ: 1) 1; 2) 7; 3) 2; 4) 48.
