求一道数学题的答案(一定要附上过程和讲解!!)急急急!!!!!!

合并同类项:2X²Y+Y²X-YX²-2YX²
2024-12-19 23:11:13
推荐回答(1个)
回答1:

=(2X²Y--YX²-2YX²)+Y²X
=(2-1-2)X²Y+Y²X
=-X²Y+Y²X