发布网友 发布时间:2024-10-28 10:48
共2个回答
热心网友 时间:2024-10-28 11:10
2002^2-1997*2003
=2002^2-(2000-3)(2000+3)
=2002^2-2000^2+9
=(2002+2000)(2002-2000)+9
=4002*2+9
=8004+9
=8013
热心网友 时间:2024-10-28 11:10
2002^2-1997*2003
=2002*2002-1997*2003
=2002*2002-1997*2002+1997
=2002*(2002-1997)+1997
=10010+1997
=12007