(1+1/2008+1/2009)*(1/2008+1/2009+1/2010)-(1+1/2008+1/2009+1/2010)*(1/2008+1/2009) (1+1/2008+1/2009)*(1/2008+1/2009+1/2010)-(1+1/2008+1/2009+1/2010)*(1/2008+1/2009)

来源：学生作业学帮网 编辑：学帮网 时间：2024/05/30 11:01:40

(1+1/2008+1/2009)*(1/2008+1/2009+1/2010)-(1+1/2008+1/2009+1/2010)*(1/2008+1/2009)
(1+1/2008+1/2009)*(1/2008+1/2009+1/2010)-(1+1/2008+1/2009+1/2010)*(1/2008+1/2009)

设1/2008+1/2009=t
(1+1/2008+1/2009)*(1/2008+1/2009+1/2010)-(1+1/2008+1/2009+1/2010)*(1/2008+1/2009)
=(1+t)(t+1/2010)-t(1+t+1/2010)
=t(1+t)+(1+t)/2010-t(1+t)-t/2010
=(1+t-t)/2010
=1/2010

2008×2009-1分之2008+2009×2007 2008+2009×2007/2008×2009-1 2008+2007+2009/2008*2009-1 2008+2009*2007/2008*2009-1 2009×2009+2008分之2009×2010-1 2008*2009-1与2008^-2008*2009+2009^的大小2008*2009-1与2008^-2008*2009+2009^ (2008+2007*2009/2008*2009-1)+(2009+2008*2010/2009*2008-1)怎么算 |1/2009-1/2008|+|1/2008-1/2007|+|1/2007-1/2006|-|1/2006-1/2009| （2010+1／2009）／（2009+1／2010）+（2008+1／2009）／（2009+1／2008） 2008*2009-1分之2008+2007*2009+2009*1010-1分之2009+2008*2010用巧算 计算(-0.2)^2009×5^2009+(-1)^2009-(-1)^2008 2008+2009*20082008-2008*20092009+1简算 2009*2010-1分之2009+2008+2010 计算：|1/2009-1/2008|-|1/2010-1/2008|+|1/2010-1/2009| 计算|1/2009-1/2008|+|1/2008-1/2007|-|1/2009-1/2007|=（ ） 计算:|1/2009-1/2008|+|1/2008-1/2007|-|1/2009-1/2007| 1/2010-1/2009 的绝对值+1/2009-1/2008的绝对值+1/2008-1/2007 计算：|1/2009-1/2008|+|1/2008-1/2007|-|1/2009-1/2007|=