通分x-y/3x+3y与2xy/(x+y)^2
问题描述:
通分x-y/3x+3y与2xy/(x+y)^2
答
(X-Y)*(X+Y)/3(X+Y)^2与6XY/3(X+Y)^2.
(X^2-Y^2)/3(X+Y)^2与6XY/3(X+Y)^2.