化简x-y分之x + x³-2x²y+xy²分之y³ ÷ y²-x²分之xy+y²

来源：学生作业学帮网编辑：学帮网时间：2024/05/28 23:32:11

原式=x/(x-y)+y³/x(x-y)²÷[-y(x+y)/(x+y)(x-y)]
=x/(x-y)-y³/x(x-y)²×(x-y)/y
=x/(x-y)-y²/x(x-y)
=(x²-y²)/x(x-y)
=(x+y)(x-y)/x(x-y)
=(x+y)/x