化简分式(X-Y+4XY/X-Y)(X=Y-4XY/X+Y)的结果是?`````告诉偶啊...

(x/x+y-x/y-x-2xy/x.x-y.y)/(1/x-1/y) 分式化简 化简分式(X-Y+4XY/X-Y)(X=Y-4XY/X+Y)的结果是?`````告诉偶啊... 送分呃...告诉偶啊...化简分式(X-Y+4XY/X-Y)(X=Y-4XY/X+Y)的结果是?10.点#35 xy/x-z-xy/y-z 分式化简 (x-y+(4xy/x-y))(x+y-(4xy/x+y)) 分式计算 化简求值 分式x²-4/xy-x+2y-2,其中x=-8,y=1/2 化简分式方程:x*x-xy-y*y/x*x-3x-6y+2xy 初二数学化简分式x^2 -y^2/xy - xy-y^2/xy-x^2x^2 -y^2/xy - xy-y^2/xy-x^2 化简分式(x-y+4xy/x-y)(x-y-4xy/x+y)的结果是 A.x^2-y^2 B.y^2-x^2 C.x^2-4y^2 D.4x^2-y^2 化简分式｛X－Y＋（4XY）/（X－Y）｝｛X＋Y－（4XY）/（X＋Y）｝的结果是? 化简计算:[x-y+4xy/(x-y)] * [x+y-4xy/(x+y)] 化简下列各分式：x的平方y-2xy分之4-x的平方 4-x^2/x^2y-2xy分式化简 这个分式方程怎么化简?X^4-Y^4/X^2+2XY+Y^2 乘 Y+X/X^2+Y^2 分式化简x^2-2xy+y^2分之x^3-xy^2 分式的化简求值已知x/y=2求x²-xy+3y²/x²+xy+6y² 数学分式化简求值题1/x - 1/y = 3 的时候求 2x + 3xy - 2y/x - xy -y 的值 化简分式 x^2-y^2分之1/2x^2+xy-1.5y^2