20022003x20032002-20022002x20032003
20022003x20032002-20022002x20032003
日期:2021-06-13 13:15:40 人气:1
解:20022003x20032002-20022002x20032003
=(20022002+1)×20032002-20022002×(20032002+1)
=20022002×20032002+20032002-20022002×20032002-20022002
=10000
=(20022002+1)×20032002-20022002×(20032002+1)
=20022002×20032002+20032002-20022002×20032002-20022002
=10000