问题
解答题
|
答案
,2008+2007×2009 2008×2009-1
=
,2008+2007×(2008+1) 2008×(2008+1)-1
=
,2008+2007×2008+2007 2008×2008+2008-1
=
,2008×2008+2007 2008×2008+2007
=1.
|
,2008+2007×2009 2008×2009-1
=
,2008+2007×(2008+1) 2008×(2008+1)-1
=
,2008+2007×2008+2007 2008×2008+2008-1
=
,2008×2008+2007 2008×2008+2007
=1.