.化简什么的(x-y+4xy/x-y)(x+y-4xy/x+y)抱歉我只是懒得算了..T T

.化简什么的(x-y+4xy/x-y)(x+y-4xy/x+y)抱歉我只是懒得算了..T T 化简计算:[x-y+4xy/(x-y)] * [x+y-4xy/(x+y)] 怎么化简（x-y+4xy/x-y）（x+y-4xy/x+y）（/是分数线） 化简求值x-4y/2x-7xy+3y×x-2xy-3y/2x+3xy-2y÷3x-6y/4x-4xy+y,其中：x=1999,y=-1 请问如何化简(4x-y)/x^2y^2 - (x+y)/xy^3 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 (x/x+y-x/y-x-2xy/x.x-y.y)/(1/x-1/y) 分式化简 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 谁帮我化简：[(x+y)(x-y)-(x+y)^2-2y(x-y)-2xy]÷xy 化简并求值 xy-2{xy-[3x²y-(xy²+0.5xy)]+4x²y},其中x=1,y=-2 化简分式(X-Y+4XY/X-Y)(X=Y-4XY/X+Y)的结果是?`````告诉偶啊... 化简分式｛X－Y＋（4XY）/（X－Y）｝｛X＋Y－（4XY）/（X＋Y）｝的结果是? 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 (x-y+(4xy)/(x-y))*(x+y-(4xy)/(x+y)) 请问化简结果是多少?谢谢heyinbu但是希望可以有解题过程 化简求值:2(x的平方y+xy)-3(x的平方y-xy)-4x的平方y,其中x=1,y=负1 化简求值：2（x的平方y+xy）-3（x平方y-xy）-4x平方y,其中x=-1,y=1 化简求值：2（x的平方y+xy）-3（x平方y+xy）-4x平方y,其中x=-1,y=2 化简并求值2(x^2y+xy)-3(x^2y+xy)-4x^2y,其中x=-2,y=1/2