201×201–202×198简便运算4
发布网友
发布时间:2023-10-13 14:38
我来回答
共3个回答
热心网友
时间:2024-12-03 06:29
201×201–202×198
=201×201–(201+1)×198
=201×201–201×198-1×198
=201×(201–198)-198
=201×2-198
=402-200+2
=204
热心网友
时间:2024-12-03 06:29
201×201–202×198
= 201×201–(201×198+198)
=201×201–201×198-198
=201×(201-198)-198
=201×3-198
=603-200+2
=405
热心网友
时间:2024-12-03 06:30
201x201-201x198-1x198
=201x(201-198)-198
=603-198
=405