(x-y)(x+y)=(x+y)通分具体！

(x-y)(x+y)=(x+y)通分具体！ x-y与y/x-y通分 x+y/x-y和y+x/y-x通分 y/x(x+y),x/y(x-y)通分 x-y和y-x通分 通分:-x/a(x-y) ,y/b(y-x) 通分x/a(x-y),y/b(y-x) 通分 a/(y-x)^2,b/(x-y)(x+y) x/(x+y)(x-y)的三次方,y/(y+x)(y-x)的平方通分 2xy/(x+y)(x+y)与x/(x+y)(x-y)怎么通分 函数 y=x+1/x 怎么通分? 通分:X/X-Y,Y/X^2=2XY=Y^2,2/Y^2-X^2 通分x+y分之x-y,x-y分之x+y 通分x/3y与3x/2y^2 x+y分之一与x-y分之一通分, 通分x/3y与3x/2y^2 x/xy-y²与y/x²-xy 通分 通分1/y-x,1/2x+2y