如题所述
2006x2006x2006-2006x2006-2005
=2006³-2006²-2005
=2006²(2006-1)-2005
=2006²*2005-2005
=2005(2006²-1)
=2005(2006-1)(2006+1)
=2005²*2007
=8068190175
=2006³-2006²-2005
=2006²(2006-1)-2005
=2006²*2005-2005
=2005(2006²-1)
=2005(2006-1)(2006+1)
=2005²*2007
=8068190175
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