(-1)2009次方+(-1)2008次方+0的2007次方+(-1)的2006次方=_____

(-1)2009次方+(-1)2008次方+0的2007次方+(-1)的2006次方=_____

原式=-1+1+0+1=1

用簡便算灋計算.(1)2004+2003-2002-2001+2000+1999-1998-1997+…+8+7-6-5+4+3-2-1 = = = (2)2005×20062006-2006×20052005

(1)2004+2003-2002-2001+2000+1999-1998-1997+…+8+7-6-5+4+3-2-1
=(2004-2002)+(2003-2001)+(2000-1998)+…+(8-6)+(7-5)+(4-2)+(3-1)
= 2004/2× 2
= 2004
(2)2005×20062006-2006×20052005
= 2005× (20060000 + 2006)- 2006× (20050000 + 2005)
= 2005× 2006× (10000 + 1)- 2006× 2005× (10000 + 1)
= 2005× 2006× 10001 - 2006× 2005× 10001
= 0