2010×2008/2009怎样简便运算
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 02:48:45
![2010×2008/2009怎样简便运算](/uploads/image/z/132035-59-5.jpg?t=2010%C3%972008%2F2009%E6%80%8E%E6%A0%B7%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
2010×2008/2009怎样简便运算
2010×2008/2009怎样简便运算
2010×2008/2009怎样简便运算
2010*2008/2009
=(2009+1)(2009-1)/2009
=(2009²-1)/2009
=2009-1/2009
=2008又2009分之2008
(2009+1)*2008/2009=2008+2008/2009
2010×2008/2009
=(2009+1)(2009-1)/2009
=(2009^2-1)/2009
=2009-1/2009
=2008又2008/2009