x=2012,2x²y-(-yx²）-3X²y=?

来源：学生作业帮助网编辑：作业帮时间：2024/04/29 20:32:16

x=2012,2x²y-(-yx²）-3X²y=?
x=2012,2x²y-(-yx²）-3X²y=?

x=2012,2x²y-(-yx²）-3X²y=?
原式=2x²y+x²y-3x²y
=0

答案为0
过程：2x²y-(-yx²）-3X²y=2x²y+xy²-3x²y=0

等于0