(-1/3xy)^2•[xy(2x-y)-2x(xy-y^2)]
来源：学生作业帮助网 编辑：六六作业网 时间：2024/04/29 17:39:07
(-1/3xy)^2•[xy(2x-y)-2x(xy-y^2)](-1/3xy)^2•[xy(2x-y)-2x(xy-y^2)](-1/3xy)^2•[xy(2x-
(-1/3xy)^2•[xy(2x-y)-2x(xy-y^2)]
(-1/3xy)^2•[xy(2x-y)-2x(xy-y^2)]
(-1/3xy)^2•[xy(2x-y)-2x(xy-y^2)]
(-1/3xy)^2*[xy(2x-y)-2x(xy-y^2)]
= (-1/3xy)^2*[xy(2x-y)-2xy(x-y)]
= (-1/3xy)^2*xy(2x-y-2x+2y)
= (1/9x^2y^2)*xy^2
=1/9x