问题
解答题
2008×20092009-2009×20082008.
答案
2008×20092009-2009×20082008,
=2008×2009×10001-2009×2008×10001,
=(2008×2009)×(10001-10001),
=(2008×2009)×0,
=0.
2008×20092009-2009×20082008.
2008×20092009-2009×20082008,
=2008×2009×10001-2009×2008×10001,
=(2008×2009)×(10001-10001),
=(2008×2009)×0,
=0.