= 2006 x ( 2005 + 2 ) - 1997 / 2006 x 2005 + 2015

= 2006 x 2005 + 2006 x 2 -1997 / 2006 x 2005 + 2015

= 2006 x 2005 + 4012 - 1997 / 2006 x 2005 + 2015

= 2006 x 2015 + 2015 / 2006 x 2005 + 2015

= 1

Nhớ k nha

\(\frac{2006\times2007-1997}{2006\times2005+2015}=\frac{2006\times\left(2005+2\right)-1997}{2006\times2005+2015}\)

\(=\frac{2006\times2005+2006\times2-1997}{2006\times2005+2015}\)

\(=\frac{2006\times2005+4012-1997}{2006\times2005+2015}=\frac{2006\times2005+2015}{2006\times2005+2015}=1\)

2006 X 2017 - 1997 / 2006x2005+2015  = 2017-1997 / 2005 +2015  =  10 / 4020  =  1 /402

Đáp số hình như là 0

Đáp số là 1

Sorry nha mk nhầm, là 1 đó

trả lời hộ tớ đi

Chi oi ,sao trung hop the!To cung ko giai dc

\(\frac{2006\times2005-1}{2004\times2006+2005}=\frac{2006\times\left(2004+1\right)-1}{2004\times2006+2005}=\frac{2006\times2004+2006\times1-1}{2004\times2006+2005}=\frac{2006\times2004+2005}{2006\times2004+2005}=1\)

\(\frac{2006\times2005-1}{2004\times2006+2005}=\frac{2006\times\left(2004+1\right)-1}{2004\times2006+2005}=\frac{2004\times2006+2006\times1-1}{2004\times2006+2005}\)

\(=\frac{2004\times2006+2005}{2004\times2006+2005}=1\)

\(\frac{2006x2005-1}{2004x2006+2005}\)

\(=\frac{2006x\left(2004+1\right)-1}{2004x2006+2005}\)

\(=\frac{2006x2004+2006-1}{2004x2006+2005}\)

\(=\frac{2006x2004+2005}{2004x2006+2005}\)

\(=1\)

\(A=\dfrac{2005\times2008-1005}{2006\times2007-1007}\)

\(=\dfrac{2005\times2008-2005+1000}{2006\times2007-2007+1000}\)

\(=\dfrac{2005\times2007+1000}{2007\times2005+1000}=1\)

\(\frac{2006\times2007-2593}{2005\times2006+1419}\)

\(=\frac{2005\times2006+4012-2593}{2005\times2006+1419}\)

\(=\frac{2005\times2006+1419}{2005\times2006+1419}\)

\(=1\)