Rút gọn A=\(\dfrac{2\sqrt{3}-4}{\sqrt{3}-1}-\dfrac{2\sqrt{2}-1}{\sqrt{2}-1}+\dfrac{1+\sqrt{6}}{\sqrt{2}+\sqrt{3}}\)

Tính \(\dfrac{\sqrt{8-\sqrt{15}}}{\sqrt{30}-\sqrt{2}}\)

\(\dfrac{5}{6}\)

Tính \(\dfrac{\sqrt{8-\sqrt{15}}}{\sqrt{30}-\sqrt{2}}\)

Tính \(\sqrt{3\sqrt{2}-2\sqrt{3}}.\sqrt{3\sqrt{2}+2\sqrt{3}}\)