Ta có: A = 1996 . 1996
= (1997 - 1) . 1996
= 1996 . 1997 - 1 . 1996
B = 1995 x. 1997
= (1996 - 1) . 1997
= 1997 . 1996 - 1995 . 1
Vì B = 1997 . 1996 - 1995 . 1 > A = 1996 . 1997 - 1 . 1996
nên A < B
\(A=1995.1996+1996\)
\(B=1995.1996+1995\)
Vậy A > B