Question

2ab²-3a²b-2（a²b-ab²）化简

Answer 1

解：
原式=2ab^2-3ba^2-2ba^2+2ab^2
=(2ab^2+2ab^2)-(3ba^2+2ba^2)
=4ab^2-5ba^2

Answer 2

2ab²-3a²b-2（a²b-ab²）
=2ab²-3a²b-2a²b+2ab²
=(2ab²+2ab²)-(3a²b+2a²b)
=4ab²-5a²b