\(\frac{\sqrt{11+\sqrt{5}}+\sqrt{11-\sqrt{5}}}{\sqrt{11+2\sqrt{29}}}-\sqrt{3-2\sqrt{2}}\)
TÍNH
Tính
\(\frac{\sqrt{45+27\sqrt{2}}+\sqrt{45-27\sqrt{2}}}{\sqrt{5+3\sqrt{2}}-\sqrt{5-3\sqrt{2}}}-\frac{\sqrt{3+\sqrt{2}}+\sqrt{3-\sqrt{2}}}{\sqrt{3+\sqrt{2}}-\sqrt{3-\sqrt{2}}}\)
\(\sqrt{\sqrt{11}+1}.\sqrt{\sqrt{11}-1}+\sqrt{10}\)
1) Khử mẫu các biểu thức dưới dấu căn rồi thực hiện phép tính:
\(2\sqrt{\frac{3}{20}}+\sqrt{\frac{1}{60}}-\sqrt{\frac{1}{15}}\)
2) Trục căn thức ở mẫu:
a) \(\frac{9}{\sqrt{3}}\)
b) \(\frac{12}{3-\sqrt{3}}\)
c) \(\frac{\sqrt{2}+1}{\sqrt{2}-1}\)
d) \(\frac{7\sqrt{3}-5\sqrt{11}}{8\sqrt{3}-7\sqrt{11}}\)
e) \(\frac{1-a\sqrt{a}}{1-\sqrt{a}}\)
f) \(\frac{1}{\sqrt{18}+\sqrt{8}-2\sqrt{2}}\)
g) \(\frac{1}{1+\sqrt{2}-\sqrt{3}}\)
h) \(\frac{1}{\sqrt{2}+\sqrt{3}-\sqrt{5}}\)
1. tính
a) \(\left(2\sqrt{3}+\sqrt{3}\right).\sqrt{15}+\sqrt{45}\)
b) \(\left(\sqrt{99}-3\sqrt{3}-\sqrt{11}\right).\sqrt{11}+3\sqrt{33}\)
c) \(\frac{1}{3}\sqrt{3}-\frac{1}{4}\sqrt{48}+\frac{2}{5}\sqrt{2}-\frac{1}{4}\sqrt{12}\)
d) \(\sqrt{\frac{2+\sqrt{5}}{\sqrt{5}-2}}+\sqrt{\frac{\sqrt{5}+2}{2+\sqrt{5}}}\)
help me mk đg cần gấp
\(Tính\)
\(a.\left(\sqrt{10}-\sqrt{2}\right)\left(3+\sqrt{5}\right)\sqrt{27-9\sqrt{5}}\)
\(b.\sqrt{\frac{3\sqrt{3}-4}{2\sqrt{3}+1}}-\sqrt{\frac{4+\sqrt{3}}{5-2\sqrt{3}}}\)
\(c.\frac{3-4\sqrt{3}}{\sqrt{6}-\sqrt{2}-\sqrt{5}}\)
\(d.\left(\sqrt{11}-\sqrt{3}\right)\left(\sqrt{13-\sqrt{6}+2\sqrt{30-\sqrt{45}}}+\sqrt{11}-\sqrt{10-\sqrt{6}}\right)\)
\(e.\frac{\sqrt{4+\sqrt{5}}+\sqrt{4-\sqrt{5}}}{\sqrt{4}+\sqrt{11}}-\frac{\sqrt{20-4\sqrt{23}}}{\sqrt{5+\sqrt{2}}-\sqrt{5-\sqrt{2}}}\)
BT: Tính
a) \(\sqrt{\left(\sqrt{11}-3\right)^2}-\sqrt{\frac{2}{10-3\sqrt{11}}}\)
b) \(\frac{\left(\sqrt{5}-1\right).\sqrt{47+21\sqrt{5}}}{\sqrt{9+4\sqrt{5}}}\)
TÍNH
\(\sqrt{\frac{\sqrt{5}+2}{5\sqrt{5}+11}}+\sqrt{\frac{\sqrt{5}-2}{\sqrt{5}-1}}\)
\(A=\frac{5+7\sqrt{5}}{\sqrt{5}}+\frac{11+\sqrt{11}}{1+\sqrt{11}}\)
rút gọn biểu thức
\(A=\frac{\sqrt{11+\sqrt{5}}+\sqrt{11-\sqrt{5}}}{\sqrt{11+2\sqrt{29}}}+\sqrt{6-4\sqrt{2}}\)