Hôm kia lúc 22:27
Các câu hỏi tương tự
Rút gọn các biểu thức sau:
\(A =\sqrt(1-\sqrt3)^2- \sqrt(\sqrt3+2)^2\)
\(B = \sqrt(2-\sqrt3)^2 + \sqrt(4-2\sqrt3)\)
\(C= \sqrt(15-6\sqrt6) + \sqrt(33-12\sqrt6)\)
2) \(\dfrac{\sqrt{108}}{\sqrt{3}}\)
13) \(\sqrt{8-2\sqrt{15}}\)- \(\sqrt{23-4\sqrt{15}}\)
14) ( 4+ \(\sqrt{15}\) ) (\(\sqrt{10}\)- \(\sqrt{6}\) ) \(\sqrt{4-\sqrt{15}}\)
\(\left(\sqrt{6}+\sqrt{10}\right).\sqrt{4-\sqrt{15}}\)
\(\left(3+\sqrt{15}\right).\left(\sqrt{10}-2\right).\sqrt{3-\sqrt{5}}\)
\(\left(4+\sqrt{15}\right).\left(\sqrt{10}-\sqrt{6}\right).\sqrt{4-\sqrt{15}}\)
(\(\sqrt{10}-\sqrt{6}\)).(4+\(\sqrt{15}\)).\(\sqrt{4-\sqrt{ }15}\)
Rút gọn căn thức :
A = \(\frac{\sqrt{10}+2\sqrt{6}+\sqrt{10}.\sqrt{4+\sqrt{15}}}{\sqrt{2}+\sqrt{3}+\sqrt{5}}\)\(\frac{\sqrt{10}+2\sqrt{6}+\sqrt{10}.\sqrt{4+\sqrt{15}}}{\sqrt{2}+\sqrt{3}+\sqrt{5}}\)
Rút gọn:
A = \(\sqrt{4+\sqrt{10+2\sqrt{5}}}+\sqrt{4-\sqrt{10+2\sqrt{5}}}\)
B = \(\sqrt{4+\sqrt{15}}+\sqrt{4-\sqrt{15}}-2\sqrt{3-\sqrt{5}}\)
Rút gọn
A=\(\sqrt{8-2\sqrt{15}}\)
B=\(\sqrt{4+\sqrt{7}}-\sqrt{4-\sqrt{7}}\)
C=\(\sqrt{4+\sqrt{10+2\sqrt{5}}}+\sqrt{4-\sqrt{10+2\sqrt{5}}}\)
D=\(\sqrt{4+\sqrt{15}}+\sqrt{4-\sqrt{15}}-2\sqrt{3-\sqrt{5}}\)
B1:CHƯNG MINH ĐẲNG THỨC:
A)\(\sqrt{10}-\sqrt{6}=2\sqrt{4-\sqrt{15}}\)
B)\(\left(\sqrt{10}-\sqrt{6}\right)X\left(4+\sqrt{15}\right)X\sqrt{4-\sqrt{15}=2}\)
6 tháng 7 2021 lúc 10:10
Thực hiện từng bước của phép tính:
1.\(\left(\sqrt{2}+1\right)^3-\left(\sqrt{2}-1\right)^3\)
2.\(\sqrt{4-\sqrt{15}}+\sqrt{4+\sqrt{15}}-2\sqrt{3-\sqrt{5}}\)
3.\(\dfrac{10+2\sqrt{10}}{\sqrt{5}+\sqrt{2}}+\dfrac{8}{1-\sqrt{5}}\)
4.\(\sqrt{\dfrac{2-\sqrt{3}}{2+\sqrt{3}}}+\sqrt{\dfrac{2+\sqrt{3}}{2-\sqrt{3}}}\)
rút gọn biểu thức: a)\(\sqrt{4+\sqrt{7}}-\sqrt{4-\sqrt{7}}\)
b)\(\sqrt{4+\sqrt{10+2\sqrt{5}}}+\sqrt{4-\sqrt{10+2\sqrt{5}}}\)
c)\(\sqrt{4+\sqrt{15}}+\sqrt{4-\sqrt{15}}-2\sqrt{3-\sqrt{5}}\)