2002²-2001×2003 2001²-2010×2012
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 00:21:29
![2002²-2001×2003 2001²-2010×2012](/uploads/image/z/1988433-9-3.jpg?t=2002%26%23178%3B-2001%C3%972003+2001%26%23178%3B-2010%C3%972012)
2002²-2001×2003 2001²-2010×2012
2002²-2001×2003 2001²-2010×2012
2002²-2001×2003 2001²-2010×2012
2002²-2001×2003
=2002²-(2002-1)(2002+1)
=2002²-2002²+1
=1
2001²-2010×2012
=2011²-(2011-1)(2011+1)
=2011²-2011²+1
=1