xy(x-y)-x(x-y)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/11 23:25:45
xy(x-y)-x(x-y)²
xy(x-y)-x(x-y)²
xy(x-y)-x(x-y)²
xy(x-y)-x(x-y)²
=x(x-y)[y-(x-y)]
=x(x-y)(y-x+y)
=x(x-y)(2y-x)
xy(x-y)-x(x-y)²
=x(x-y)[y-(x-y)]
=x(x-y)(2y-x)
[xy-x(x-y)](x-y)
=(xy-x² xy)(x-y)
=x(2y-x)(x-y)