简便运算:20192020×2020-20202020×2019?

2024-12-17 01:18:48
推荐回答(1个)
回答1:

20192020*2020-20202020*2019
=20192020*2020-(20192020+10000)碧知知*2019
=猛谨20192020*2020-20192020*2019-2019*10000
=20192020*(2020-2019)悔消-20190000
=20192020-20190000
=2020