2(a²b+ab)-2(ab²-1)-2ab²-2ab 化简就行了

来源：学生作业学帮网编辑：学帮网时间：2024/05/31 22:53:57

2(a²b+ab)-2(ab²-1)-2ab²-2ab
=2a²b＋2ab－2ab²＋2－2ab²－2ab
=2a²b－4ab²＋2

2(a²b+ab)-2(ab²-1)-2ab²-2ab
=2a²b+2ab-2ab²+2-2ab²-2ab
=2a²b-4ab²+2

原式=2a²b+2ab-2ab²+2-2ab²-2ab
=2a²b-4ab²+2