Tính giá trị các biểu thức sau
câu d,e,f nhé
----- Nội dung ảnh -----
c) C = \(\frac{\sqrt{15}-\sqrt{5}}{\sqrt{3}-1}\) \(\frac{5-2\sqrt{5}}{2\sqrt{5}-4}\).
d) D = \(\frac{2\sqrt{8}-\sqrt{12}}{\sqrt{18}-\sqrt{48}}\) \(\frac{\sqrt{5}-\sqrt{27}}{\sqrt{30}-\sqrt{2}}\).
e) E = \(\frac{2\sqrt{3}-4}{\sqrt{3}-1}\) \(\frac{2\sqrt{2}-1}{\sqrt{2}-1}\) \(1+\frac{\sqrt{6}}{\sqrt{2}+\sqrt{3}}\).
f) F = \(\frac{5}{12(2\sqrt{5}+3\sqrt{2})}\) \(\frac{5}{12(2\sqrt{5}-3\sqrt{2})}\).
----- Nội dung ảnh -----
c) C = \(\frac{\sqrt{15}-\sqrt{5}}{\sqrt{3}-1}\) \(\frac{5-2\sqrt{5}}{2\sqrt{5}-4}\).
d) D = \(\frac{2\sqrt{8}-\sqrt{12}}{\sqrt{18}-\sqrt{48}}\) \(\frac{\sqrt{5}-\sqrt{27}}{\sqrt{30}-\sqrt{2}}\).
e) E = \(\frac{2\sqrt{3}-4}{\sqrt{3}-1}\) \(\frac{2\sqrt{2}-1}{\sqrt{2}-1}\) \(1+\frac{\sqrt{6}}{\sqrt{2}+\sqrt{3}}\).
f) F = \(\frac{5}{12(2\sqrt{5}+3\sqrt{2})}\) \(\frac{5}{12(2\sqrt{5}-3\sqrt{2})}\).