2009X20102010-2010X20092009怎么做才简便

2025-01-20 01:48:16
推荐回答(2个)
回答1:

2009X20102010-2010X20092009
=(2010-1)X20102010-2010X20092009
=2010X(20102010-20092009)-20102010
=2010X10001-20102010
=0

回答2:

2009x20102010-2010x20092009
=2009X2010X100001-2010*2009*100001
=0