2001²-2001×1999
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/15 02:50:22
![2001²-2001×1999](/uploads/image/z/1599842-2-2.jpg?t=2001%26%23178%3B-2001%C3%971999)
2001²-2001×1999
2001²-2001×1999
2001²-2001×1999
2001²-2001×1999
=2001*2001-2001*1999
=2001*(2001-1999)
=2001*2
=4002
2001²-2001×1999
=2001×(2001-1999)
=2001×2
=4002
答:
2001²-2001×1999
=2001×(2001-1999)
=2001×2
=4002
2001²-2001×1999
=2001×(2001-1999)
=2001×2
=4002