(4a²-3ab)+(-5a²b+2ab)
问题描述：
(4a²-3ab)+(-5a²b+2ab)
答
？
答
原式=4a²-3ab-5a²b+2ab
=4a²-ab-5a²b
答
(4a²-3ab)+(-5a²b+2ab)
=4a²-3ab-5a²b+2ab
=4a²-ab-5a²b
答
4a²-ab-5a²b