Ответ:\(\sqrt{4^6}=4^3=64\).\(\sqrt{12}\cdot\sqrt{48}=\sqrt{12\cdot48}=\sqrt{576}=24\).\(\frac{\sqrt{450}}{\sqrt{50}}=\sqrt{\frac{450}{50}}=\sqrt{9}=3\).Ответ: 1) 64; 2) 24; 3) 3.