Ответ:

  1. \(10\sqrt{3}-4\sqrt{48}-\sqrt{75}=10\sqrt{3}-16\sqrt{3}-5\sqrt{3}=-11\sqrt{3}\).
  2. \((5\sqrt{2}-\sqrt{18})\cdot\sqrt{2}=(5\sqrt{2}-3\sqrt{2})\cdot\sqrt{2}=2\sqrt{2}\cdot\sqrt{2}=4\).
  3. \((3-\sqrt{2})^2=9-6\sqrt{2}+2=11-6\sqrt{2}\).
  4. \(2\sqrt{2}+\sqrt{50}-\sqrt{98}=2\sqrt{2}+5\sqrt{2}-7\sqrt{2}=0\).
  5. \((3\sqrt{5}-\sqrt{20})\cdot\sqrt{5}=(3\sqrt{5}-2\sqrt{5})\cdot\sqrt{5}=5\).
  6. \((\sqrt{3}+\sqrt{2})^2=3+2\sqrt{6}+2=5+2\sqrt{6}\).