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：2024/05/03 06:14:52

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