简便计算20022003x20032002-20022002x20032003

2024-11-08 00:43:47
推荐回答(1个)
回答(1):

20022003×20032002-2002002×20032003
=(20022002+1)×(20032003-1)-20022002×20032003
可令A=20022002,B=20032003

原式=(A+1)(B-1)-AB
=AB-A+B-1-AB
=B-A=1
=20032003-20022002-1
=10001-1
=10000