Tính nhanh:

F=\(\left(\frac{6}{8}+1\right)\left(\frac{6}{18}+1\right)\left(\frac{6}{30}+1\right).....\left(\frac{6}{10700}+1\right)\)

Tính :

\(A=\left(\frac{6}{8}+1\right)\left(\frac{6}{18}+1\right)\left(\frac{6}{30}+1\right)...\left(\frac{6}{10700}+1\right)\)

Giúp cái !!!

Tính giá trị biểu thức sau :

\(B=\left(\frac{6}{8}+1\right)\left(\frac{6}{18}+1\right)\left(\frac{6}{30}+1\right)...\left(\frac{6}{10700}+1\right)\)

Tính: A=\(\left(\frac{6}{8}+1\right)\cdot\left(\frac{6}{18}+1\right)\cdot\left(\frac{6}{30}+1\right)\cdot...\cdot\left(\frac{6}{10700}+1\right)\)

\(\left(\frac{6}{8}+1\right)\)\(+\left(\frac{6}{18}+1\right)+\left(\frac{6}{30}+1\right)+...+\left(\frac{6}{10700}+1\right)\)

Tính :

  \(C=\left(\frac{6}{8}+1\right).\left(\frac{6}{18}+1\right).\left(\frac{6}{30}+1\right).....\left(\frac{6}{10700}+1\right)\)

Giúp mình với mình cần gấp

\(\frac{2}{\left(x+1\right)\left(x+3\right)}+\frac{5}{\left(x+3\right)+\left(x+8\right)}+\frac{10}{\left(x+8\right)\left(x+18\right)}+\frac{1}{x+18}=\frac{5}{6}\)

Tìm x;y;z

Tính A = \(\frac{1}{\left(x+1\right)\left(x+2\right)}+\frac{1}{\left(x+2\right)\left(x+3\right)}+\frac{2}{\left(x+3\right)\left(x+4\right)}+\frac{4}{\left(x+4\right)\left(x+5\right)}+\frac{8}{\left(x+5\right)\left(x+6\right)}\)

tính(rút gọn)

a,\(\left(x+3-\frac{1}{x+3}\right)\left(x+\frac{3}{x+4}\right)\)

b,\(\left(2x-4-\frac{x-12}{3x+4}\right)\left(3x-2-\frac{10}{2x+1}\right)\)

c,\(\left(2x-8-\frac{x+10}{3x+1}\right)\left(x-6-\frac{x-6}{3x+2}\right)\)

d,\(\left(1+\frac{1}{x}\right):\left(1-\frac{1}{x^2}\right)\)