Tính:

----- Nội dung ảnh -----
B = \(\frac{3}{\sqrt{5}-\sqrt{2}} + \frac{4}{\sqrt{6}+\sqrt{2}}\)

C = \(\frac{\sqrt{3}-\sqrt{6}}{1-\sqrt{2}} - \frac{2+\sqrt{8}}{1+\sqrt{2}}\)