\(\dfrac{2006\times2007-8}{2005\times2007+1999}\)

= \(\dfrac{\left(2005+1\right)\times2007-8}{2005\times2007+1999}\)

= \(\dfrac{2005\times2007+2007-8}{2005\times2007+1999}\)

= \(\dfrac{2005\times2007+1999}{2005\times2007+1999}\)

= 1

\(\frac{2005\times2007-1}{2004+2005\times2006}\)

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

\(=\frac{2005\times2006+2005\times1-1}{2004+2005\times2006}\)

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

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

\(=1\)

_Chúc bạn học tốt_

= 1 

làm bằng cách nợ hay lời 1

M=(2006-1)x(2006+1)=2006x2006-2006+2006-1=2006x2006-1

M=2006x2006-1

N=2006x2006

Vậy M<N

M=N nhé bạn

có phải 0 ko

C=(2005x2006+2005-1)/(2004+2005x2006)=

(2005x2006+2004)/(2004+2005x2006)=1

rồi cảm ơn tôi đã làm trước khi cậu ra đáp án

A = \(\frac{2005\times2007-1}{2004+2005\times2006}=\frac{2005\times\left(2006+1\right)-1}{2004+2005\times2006}=\frac{2005\times2006+2005-1}{2004+2005\times2006}\)

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

\(\frac{2005.2007-1}{2004+2005.2006}\)

\(=\frac{2005.\left(2006+1\right)-1}{2004+2005.2006}\)

\(=\frac{2005.2006+2005-1}{2004+2005..2006}\)

\(=\frac{2005.2006+2004}{2004+2005.2006}\)

\(=1\)

4024035

4024034 k mik nha

\(\frac{2005\times2007-1}{2004+2005\times2006}\)

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

=\(\frac{2005\times2006+2005\times1-1}{2004+2005\times2006}\)

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

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

Ta thấy tử số và mẫu số giống nhau nên kết quả của biểu thức bằng 1

Li-ke cho mik nhé!

\(\frac{2005.2007-1}{2004+2005.2006}=\frac{2005.\left(2006+1\right)-1}{2004+2005.2006}=\frac{2005.2006+2005.1-1}{2004+2005.2006}=\frac{2005.2006+2004}{2004+2005.2006}=1\)

\(\frac{2005.2007-1}{2004+2005.2006}=\frac{2005.\left(2006+1\right)-1}{2005.2006+2004}=\frac{2005.2006+2005-1}{2005.2006+2004}=\frac{2005.2006+2004}{2005.2006+2004}=1\)