约分 题目-(x+y)(x-y)^2 /(y+x)(y^2-x^2)
分式约分 2x(x-y)分之(y-x)²
(x-y/x+2y)³
用分式表示2x²y(x-y)÷[12xy²(y-x)]的商,并约分
x四次方-y四次方/x平方-2xy+y平方(分式约分)
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y
约分:(x²-4)/(xy+2y)
(x-y)(x-2y)-(3x-2y)(x-3y)
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
分解下列因式:x(y-x)+y(y-x)-(x-y)^2
(x-2y)²+(2x-4y)(x+y)+(x+y)²
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?