Thuc hien phep tinh   \(\frac{5}{4-\sqrt{11}}+\frac{1}{3+\sqrt{7}}-\frac{6}{\sqrt{7}-2}-\frac{\sqrt{7}-5}{2}\)

thuc hien phep tinh bang cach hop li neu co the 30-[50-(9-4)²]+2015⁰

Thuc hien phep tinh: B=\(\dfrac{2+\sqrt{3}}{\sqrt{2}+\sqrt{2+\sqrt{2}}}+\dfrac{2-\sqrt{3}}{\sqrt{2}-\sqrt{2-\sqrt{3}}}\)

a) thuc hien phep tinh :

A= 4^20x(1/2)^38 - (1/9)^15 : (3^29)+2014^0

b) so sánh : \(\sqrt{50}+\sqrt{26+1}\) và \(\sqrt{168}\)

Thuc hien phep tinh:

B=\(\frac{2+\sqrt{3}}{\sqrt{2}+\sqrt{2+\sqrt{3}}}+\frac{2-\sqrt{3}}{\sqrt{2}-\sqrt{2-\sqrt{3}}}\)

thuc hien phep tinh:

\(\sqrt{3}.\sqrt{\frac{1}{27}}.\sqrt{5}.\sqrt{20}\)

thuc hien phep tinh

\(\left[6-3.\left(-\frac{1}{3}^2\right)+\sqrt{0,25}\right]:\sqrt{0,\left(9\right)}\)

\(\left(\frac{1}{2}\right)^2.\sqrt{16}-3^2.\sqrt{0,01}+\left(2^2\right)^2-\left(0,0\left(6\right)\right)+\frac{13}{30}\)

thuc hien phep tinh bang cach hop li neu co the   37x96-86x37+2x23x5-30+4x16x25

bai 1 : tinh

\(\sqrt{49}\);  \(\sqrt{-49}\) ;  \(\sqrt{0,01}\)

bai 2 : so sanh 

a,15 va \(\sqrt{235}\)

b,\(\sqrt{7}\)+ \(\sqrt{15}\)va 7

bai 3 ; tinh hop ly

A = 7,3.10,5-7,3.15+2,7.10,5-15.2,7

bai 4 : so sanh

a, 1,(05) va 0,(31)

b, 3,0(21) va 3,021

c,0,001 va 0,(001)

d,1,(31) va 1,(313)