Question

\(A=\frac{2008.2009+4018}{2010.2011-4020}\)

Answer 1

                                   Bài làm :

Ta có :

\(A=\frac{2008.2009+4018}{2010.2011-4020}\)

\(A=\frac{2008.2009+2009.2}{2010.2011-2010.2}\)

\(A=\frac{2009.\left(2008+2\right)}{2010.\left(2011-2\right)}\)

\(A=\frac{2009.2010}{2010.2009}=1\)

Vậy A=1 .

Chúc bạn học tốt !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 2

\(A=\frac{2008.2009+4018}{2010.2011-4020}\)

\(A=\frac{2008.2009+2009.2}{2010.2011-2010.2}\)

\(A=\frac{2009.\left(2008+2\right)}{2010.\left(2011-2\right)}\)

\(A=\frac{2009.2010}{2010.2009}=1\)

Vậy ....