2009×20082008-2008×20092009,
=2009×2008×10001-2008×2009×10001,
=0.
2009×20082008-2008×20092009=_.
2009×20082008-2008×20092009=______.
数学人气:562 ℃时间:2019-10-09 14:41:31
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