问题
解答题
计算: (1)(-
(2)20082-2007×2009. |
答案
(1)原式=-3-1+1-4
=-7;
(2)原式=20082-(2008+1)
=20082-(20082-12)
=20082-20082+1
=1.
计算: (1)(-
(2)20082-2007×2009. |
(1)原式=-3-1+1-4
=-7;
(2)原式=20082-(2008+1)
=20082-(20082-12)
=20082-20082+1
=1.