数学(x-y)^5*(y-x)^3*(x-y)^2
数学(x-y)^5*(y-x)^3*(x-y)^2
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
(2X-3y)-(5x-y)
数学计算填空(5x+y)(5x-y)(5x+y)(-5x+y)(5x+y)(-5x-y)(5x+y)(x-5y)(x ^
初二数学已知(x-y):y=2:3,求(2x+5y):(3x-y)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
[(x+2y)(x-2y)-(2x-y)^2+(3x-y))2x-5y)]/(-x)
2(2x+3y)(3x+2y)-(6x-y)(2x-5y)
[(x+2y)^2 -(x+y)(3x-y)-5y^2]÷2x
化简:[(x+2y)^2-(x+y)(3x-y)-5y^2]/2x
(x+2)(x+3) (x-4)(x+1) (y+4)(y-2) (y-5)(y-3)
(2x -y)(3x-2y)+(y-x)(2x-5y)