你好:
2010×20112011-2011x20102010
=2010×2011×10001-2011x2010×10001
=2011x2010×10001-2011x2010×10001
=0
2010*20112011-2011*20102010
=2010×2011×10001-2011×1010×10001
=0
2010×20112011-2011x20102010
=2010×2011×10001-2011x2010×10001
=2011x2010×10001-2011x2010×10001
=0