1.Chứng minh:

\(\frac{1}{\sqrt{2}-\sqrt{3}}.\sqrt{\frac{3\sqrt{2}-2\sqrt{3}}{3\sqrt{2}+2\sqrt{3}}}=-1\)

1.Chứng minh:
\(\frac{\left(5\sqrt{3}+\sqrt{50}\right)\left(5-\sqrt{24}\right)}{\sqrt{75}-5\sqrt{2}}=1\)

tính:

\(\frac{x}{2\sqrt{x}-3\sqrt{y}}\)

tính:

\(\frac{4-\sqrt{3}}{5\sqrt{2}-2\sqrt{5}}\)

Tính:

\(\frac{1}{\sqrt{2\sqrt{3}+\sqrt{2}}}\)

1.tính:

\(\frac{3}{4+\sqrt{9+4\sqrt{5}}}\)

\(\sqrt{x-2+\sqrt{2x-5}}+\sqrt{x+2+3\sqrt{2x-5}}=7\sqrt{2}\)