tính
a.\(\sqrt{3+2\sqrt{2}}\)
b.\(\sqrt{7+4\sqrt{3}}\)
c. \(\sqrt{14-6\sqrt{5}}\)

tính
g. \(\dfrac{\sqrt{15}-\sqrt{5}}{\sqrt{3}-1}\)-\(\dfrac{9-4\sqrt{5}}{2\sqrt{5}-4}\)
h.\(\dfrac{2\sqrt{8}-\sqrt{12}}{\sqrt{18}-\sqrt{48}}\)-\(\dfrac{\sqrt{5}+\sqrt{27}}{\sqrt{30}+\sqrt{162}}\)

Tính 
G.\(\sqrt{7-2\sqrt{6}}\)
H.\(\sqrt{13-4\sqrt{3}}\)
I. \(\sqrt{7-4\sqrt{3}}\)\(-2\)
J.\(\sqrt{15-6\sqrt{6}}\)+\(\sqrt{33-12\sqrt{6}}\)

sắp xếp theo thứ tự giảm dần
a.\(7\sqrt{2}\);\(2\sqrt{8}\);\(\sqrt{28}\)và \(5\sqrt{2}\)
b.\(3\sqrt{10}\);\(5\sqrt{3}\);\(\dfrac{20}{\sqrt{ }5}\)và 12\(\sqrt{\dfrac{2}{3}}\)

sắp xếp theo thứ tự tăng dần
a.3\(\sqrt{5}\);2\(\sqrt{6}\);\(\sqrt{29}\)và 4\(\sqrt{2}\)
b.5\(\sqrt{2}\);\(\sqrt{39}\);3\(\sqrt{8}\)và \(2\sqrt{15}\)