
2014x20152015-2015x20142014怎么简便计算?
2个回答
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2014x20152015-2015x20142014
=2014x2015x10001-2015x2014x10001
=(2014x2015-2015x2014)x10001
=0x10001
=0
=2014x2015x10001-2015x2014x10001
=(2014x2015-2015x2014)x10001
=0x10001
=0
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