2(a²b+ab)-2(ab²-1)-2ab²-2ab 化简就行了

问题描述:

2(a²b+ab)-2(ab²-1)-2ab²-2ab 化简就行了

原式=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

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