作业帮x-y分之x² - y-x分之y²-2xy
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/06 09:46:21
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x-y分之x² - y-x分之y²-2xy
x-y分之x² - y-x分之y²-2xy
x-y分之x² - y-x分之y²-2xy
x² /(x-y) - (y²-2xy)/(y-x)
=x² /(x-y) + (y²-2xy)/(x-y)
=(x² + y²-2xy)/(x-y)
=(x-y)²/(x-y)
= x-y