\(\frac{2006.2005-1}{2004.2006+2005}\)
\(=\frac{2006\left(2004+1\right)-1}{2004.2006+2005}\)
\(=\frac{2006.2004+2006-1}{2004.2006-2005}\)
\(=\frac{2006.2004+2005}{2004.2006+2005}=1\)
nha
bn Nguyễn Minh Anh bn nói rõ hơn đc ko?
2006 x 2005 - 1/ 2004 x 2006 + 2005
= 2006 x (2004 + 1) - 1/2004 x 2006 + 2005
= 2006 x 2004 + 2006 x 2005/2004 x 2006 + 2005
= 2006 x 2004 + 2005/2004 x 2006 + 2005
= 1
\(\frac{2006.2005-1}{2004.2006+2005}\)
\(=\frac{2006.2005-1}{2004.2006+\left(2006-1\right)}\)
\(=\frac{2006.2005-1}{2004.2006+2006-1}\)
\(=\frac{2006.2005-1}{2006\left(2004+1\right)-1}\)(t/c phân phối )
\(=\)\(\frac{2006.2005-1}{2006.2005-1}\)
\(=1\)