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数学
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简算1996*2004-1998*2006
人气:108 ℃ 时间:2020-05-23 03:54:02
解答
1996x2004-1998x2006
=1996x2004-(1996+2)x2006
=1996x2004-1996x2006-2x2006
=1996x(2004-2006)-2x2006
=-2x1996-2x2006
=-2x(1996+2006)
=-2x4002
=-8004
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