A=\(\frac{2006x\left(2004+1\right)-1}{2006x2004+2005}=\frac{2006x2004+2006-1}{2006x2004+2005}\)
= \(\frac{2006x2004+2005}{2006x2004+2005}=1\)
A=\(\frac{2006x\left(2004+1\right)-1}{2006x2004+2005}=\frac{2006x2004+2006-1}{2006x2004+2005}\)
= \(\frac{2006x2004+2005}{2006x2004+2005}=1\)
Tính
\(\frac{1}{1\times2}+\frac{1}{2\times3}+\frac{1}{3\times4}+...+\frac{1}{2004\times2005}+\frac{1}{2005\times2006}=A\)
\(\frac{1}{6}+\frac{2}{15}+\frac{4}{45}+\frac{2}{99}+\frac{10}{600}=A\)
( 2006 x 2005 + 2005 + 2004 ) x (1 + \(\frac{1}{2}:\frac{3}{2}-\frac{3}{4}\)) = ?
\(\frac{2005\cdot2007-1}{200+2005\cdot2006}\)
\(\frac{244\cdot395-151}{244+395\cdot243}\)
Tính nhanh:
\(\frac{2004\cdot2006-2003}{2005\cdot2005-2004}\)
TÍNH HỘ MÌNH VỚI NHÉ ?????
A= \(\frac{2006X2010-2005}{2007X2009-2008}\)
Tính kết quả sau: { 2003 x 2004+ 2004 x 2005 }x { 2005 :1 -1 x2005}
Tính kết quả sau:
[ 2003 x 2004 + 2004 x 2005} x{ 2005:1 - 1 x2005}
Tính nhanh giá trị của biểu thức :
\(\frac{2004\times2007+6}{2005\times2005+2009}\)
So sanh cac phan so sau: \(\frac{2003}{2004};\frac{2004}{2005};\frac{2005}{2006}\)