[(x+y)^5-(x+y)^3]/(x+y)^3的值
先化简再求值(x-y)(x+y)-(x-2y) 的完全平方+x(3x-5y)-(x-y)(x-2y),其中x=1/2 y
已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值
若x-y/x+y=5,求x-y/2x+2y+5x+5y/3x-3y的值
已知|3x-y|+|x+y|=0,求x-y除以x*y的值.
已知XY.Y=-3,求-XY(X.X.X.Y.Y.Y.Y.Y.Y.Y-3.X.X.Y.Y.Y.Y.Y-Y)的值.(过程完
(y-x)(x-y)^3(y-x)^5怎么算
数学(x-y)^5*(y-x)^3*(x-y)^2
已知:x-y=1,x+y=-7,求代数式3(x+y)+20(x-y)-5的值
1.已知:x-2y=3,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除4x 的值
已知x-2y=2016,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以8x的值
已知x-2y=2012,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]÷8x的值
已知x-2y=2011,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]÷4x的值.