Question

 

1998 x1996 +1997+1995 trên 1997x1996-1995x1996

Answer 1

\(\dfrac{1998.1996+1997+1995}{1997.1996-1995.1996}\)

\(=\dfrac{1998.1996}{1997.1996-1995.1996}+\dfrac{1997+1995}{1997.1996-1995.1996}\)

\(=\dfrac{1998.1996}{1996\left(1997-1995\right)}-\dfrac{1997-1995}{1996\left(1997-1995\right)}\)

\(=\dfrac{1998}{1997-1995}-\dfrac{1}{1996}\)

\(=\dfrac{1998}{2}-\dfrac{1}{1996}\)

\(=999-\dfrac{1}{1996}\)

\(\approx998,99\)

 

 

 

 

Answer 2

1000