Các câu hỏi tương tự
thực hiện phép tính:
\(\left(\sqrt{3}-2\right)\times\left(\sqrt{6}+\sqrt{2}\right)\sqrt{2+\sqrt{3}}\)
\(\sqrt{\frac{\sqrt{5}}{8\sqrt{5}+3\sqrt{35}}}\times\left(3\sqrt{2}+\sqrt{14}\right)\)
\(\sqrt{\frac{\sqrt{5}}{8\sqrt{5}+3\sqrt{35}}}\cdot\left(3\sqrt{2}+\sqrt{14}\right)\)
ai júp mk vs!!
Tính
\(A=\sqrt{\frac{\sqrt{5}}{8\sqrt{5}+3\sqrt{35}}}\left(3\sqrt{2}+\sqrt{14}\right)\)
\(\sqrt{\dfrac{\sqrt{5}}{8\sqrt{5}+3\sqrt{35}}}\cdot\left(3\sqrt{2}+\sqrt{14}\right)\)
\(A=\sqrt{\frac{\sqrt{5}}{8\sqrt{5}+3\sqrt{35}}}\left(3\sqrt{2}+\sqrt{14}\right)\)
Tính A
Rút gọn các biểu thức sau :a,frac{3}{sqrt{5}-sqrt{2}}+frac{4}{sqrt{6}+sqrt{2}}b left(sqrt{20}-sqrt{45}+sqrt{5}right).sqrt{5}c,left(5sqrt{frac{1}{5}}+frac{1}{2}sqrt{20}-frac{5}{4}sqrt{frac{4}{5}+sqrt{5}}right):2sqrt{5}d 2sqrt{3}left(2sqrt{6}-sqrt{3}+1right)e sqrt{2+sqrt{3}}timessqrt{2-sqrt{3}}g frac{5sqrt{7}-7sqrt{5}+2sqrt{70}}{sqrt{35}}h left(sqrt{frac{2}{3}}+sqrt{frac{3}{2}}right)timessqrt{6}i left(1+sqrt{2}+sqrt{3}right)timesleft(1+sqrt{2}-sqrt{3}right)k frac{1}{sqrt{5}+sqrt{3}}-frac{1}{sqr...
Đọc tiếp
Rút gọn các biểu thức sau :
a,\(\frac{3}{\sqrt{5}-\sqrt{2}}+\frac{4}{\sqrt{6}+\sqrt{2}}\)
b \(\left(\sqrt{20}-\sqrt{45}+\sqrt{5}\right).\sqrt{5}\)
c,\(\left(5\sqrt{\frac{1}{5}}+\frac{1}{2}\sqrt{20}-\frac{5}{4}\sqrt{\frac{4}{5}+\sqrt{5}}\right):2\sqrt{5}\)
d \(2\sqrt{3}\left(2\sqrt{6}-\sqrt{3}+1\right)\)
e \(\sqrt{2+\sqrt{3}}\times\sqrt{2-\sqrt{3}}\)
g \(\frac{5\sqrt{7}-7\sqrt{5}+2\sqrt{70}}{\sqrt{35}}\)
h \(\left(\sqrt{\frac{2}{3}}+\sqrt{\frac{3}{2}}\right)\times\sqrt{6}\)
i \(\left(1+\sqrt{2}+\sqrt{3}\right)\times\left(1+\sqrt{2}-\sqrt{3}\right)\)
k \(\frac{1}{\sqrt{5}+\sqrt{3}}-\frac{1}{\sqrt{5}-\sqrt{3}}\)
l \(\frac{1}{2+\sqrt{3}}+\frac{\sqrt{2}}{\sqrt{6}}-\frac{2}{3+\sqrt{3}}\)
m \(\frac{\sqrt{5+2\sqrt{6}}+\sqrt{8-2\sqrt{15}}}{\sqrt{7+2\sqrt{10}}}\)
Rút gọnsqrt{5+sqrt{21}}+sqrt{5-sqrt{21}}-2sqrt{4sqrt{7}}sqrt{8+sqrt{55}}-sqrt{8-sqrt{55}}-sqrt{125}left(sqrt{14}-sqrt{10}right)left(6-sqrt{35}right)sqrt{6+sqrt{35}}left(sqrt{2}+1right)left(sqrt{3}-1right)left(sqrt{6}+1right)left(5-2sqrt{2}-sqrt{3}right)sqrt{7-3sqrt{5}}left(7+3sqrt{5}right)left(3sqrt{2}+sqrt{10}right)
Đọc tiếp
Rút gọn
\(\sqrt{5+\sqrt{21}}+\sqrt{5-\sqrt{21}}-2\sqrt{4\sqrt{7}}\)\(\sqrt{8+\sqrt{55}}-\sqrt{8-\sqrt{55}}-\sqrt{125}\)\(\left(\sqrt{14}-\sqrt{10}\right)\left(6-\sqrt{35}\right)\sqrt{6+\sqrt{35}}\)\(\left(\sqrt{2}+1\right)\left(\sqrt{3}-1\right)\left(\sqrt{6}+1\right)\left(5-2\sqrt{2}-\sqrt{3}\right)\)\(\sqrt{7-3\sqrt{5}}\left(7+3\sqrt{5}\right)\left(3\sqrt{2}+\sqrt{10}\right)\)
Rút gọn các biểu thức sau:a) left(sqrt{8}-3sqrt{2}+sqrt{10}right)left(sqrt{2}-3sqrt{0,4}right) b) left(sqrt{28}-2sqrt{14}+sqrt{7}right).sqrt{7}+7sqrt{8}c) 2sqrt{left(sqrt{2}-3right)^2}+sqrt{2left(-3right)^2}-5sqrt{left(-1right)^4} d) left(frac{sqrt{14}-sqrt{7}}{1-sqrt{2}}+frac{sqrt{15}-sqrt{5}}{1-sqrt{3}}right):frac{1}{sqrt{7}-sqrt{5}}
Đọc tiếp
Rút gọn các biểu thức sau:
a) \(\left(\sqrt{8}-3\sqrt{2}+\sqrt{10}\right)\left(\sqrt{2}-3\sqrt{0,4}\right)\) b) \(\left(\sqrt{28}-2\sqrt{14}+\sqrt{7}\right).\sqrt{7}+7\sqrt{8}\)
c) \(2\sqrt{\left(\sqrt{2}-3\right)^2}+\sqrt{2\left(-3\right)^2}-5\sqrt{\left(-1\right)^4}\) d) \(\left(\frac{\sqrt{14}-\sqrt{7}}{1-\sqrt{2}}+\frac{\sqrt{15}-\sqrt{5}}{1-\sqrt{3}}\right):\frac{1}{\sqrt{7}-\sqrt{5}}\)
\(x\sqrt[3]{35-x^3}\times\left(x+\sqrt[3]{35-x^3}\right)=30\)
\(CMR:A=\frac{1}{\left(\sqrt{1}+\sqrt{3}\right)^3}+\frac{1}{\left(\sqrt{3}+\sqrt{5}\right)^3}+...+\frac{1}{\left(\sqrt{2003}+\sqrt{2005}\right)^3}< \frac{246}{2007}\)