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2013^2-2014*2012

分类: 作业答案 • 2021-12-19 14:56:17

问题描述：

2013^2-2014*2012

答

2013^2-2014*2012
=2013²-(2013+1)(2013-1)
=2013²-2013²+1
=1;
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2013^2-2014*2012

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