20022002x2009减去20092009x2002等于多少
原式=2002×2009×(10001-10001)
=0
原式简化后等于2002×2009×(10001-10001)=0
解:根据题意
20022002*2009-20092009*2002
=2002*2009*10001-2002*2009*10001
=2002*2009*(10001-10001)
=2002*2009*0
=0
20022002x2009-20092009x 2002
=2002x2009x(10001-10001)
=2002x2009x0
=0
望采纳哦
20022002x2009-20092009x2002
=20022002x2002+20022002x7-20092009x2002
=20022002x7+20022002x2002-20092009x2002
=20022002x7+20022002x2002-(20022002x2002+70007x2002)
=20022002x7-70007x2002
=2002x(10001x7-70007x1)
=2002x0
=0
等于零啊,前后一样。
20022002x2009-20092009x 2002
=2002×10001x2009-2009×10001x2002
=0
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