1+(-2)+(-3)+4+5+(-6)+(-7)+8+......+2009+(-2010)+(-2011)+2012

2025-02-22 21:50:03
推荐回答(3个)
回答1:

=2012/(-2)

=-1006

回答2:

1 2-3-4 5 6-7-8 2009 2010-2011-2012 =(1-3) (2-4) (5-7) (6-8) (2009-2011) (2010-2012)=-2-2-2-2-2-

回答3:

0