(X3-2x2y+xy2)÷（x3-xy2）要求约分
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(X3-2x2y+xy2)÷（x3-xy2）要求约分(X3-2x2y+xy2)÷（x3-xy2）要求约分(X3-2x2y+xy2)÷（x3-xy2）要求约分(X3-2x2y+xy2)÷（x3-xy2）
(X3-2x2y+xy2)÷（x3-xy2）要求约分
(X3-2x2y+xy2)÷（x3-xy2）要求约分
(X3-2x2y+xy2)÷（x3-xy2）要求约分
(X3-2x2y+xy2)÷（x3-xy2）
=x(x2-2xy+y2)/[x(x2-y2)]
=(x-y)2/[(x-y)(x+y)]
=(x-y)/(x+y)
(X2-2xy+y2)÷（x2-y2）=x-y/x+y
X3-2X2Y2+XY2/X3-(X3-2X2Y+XY2/X3-Y2)
(X3-2x2y+xy2)÷（x3-xy2）=(x2-2xy+y2)/(x2-y2)=(x-y)2/(x-y)(x+y)=(x-y)/(x+y)
=(x-y)÷(x+y)
(X3-2x2y+xy2)÷（x3-xy2）要求约分
x3-2x2y+xy2-x
因式分解:x3-2x2y+xy2
x3+2x2y+2xy2+y3因式分解
分解因式：x3+xy2－2x2y
试说明代数式(x3+3x2y-4xy2+6y3)-(2x3-x2y-xy2-y3-1)+(x34x2y+3xy2-7y3)的值与xy取值无关
因式分解：x3-y3-x2y+xy2
x3+x2y-xy2-y3=
(4xy2-2x2y)-( )=x3-2x2y+4xy2+y3．
分解因式:X3+2X2Y+2XY2+Y3=
若m=x3-3x2y+2xy2+3y2 n=x3-2x2y+xy2-5y3,则2x3-7x2y+5xy2+14y2等于( )若m=x3-3x2y+2xy2+3y2 n=x3-2x2y+xy2-5y3,则2x3-7x2y+5xy2+14y2等于( )空里用字母表示
分解因式 x3+y3-x2y-xy2
x3-y3-x2y+xy2分解因式
分解因式x3-xy2+x2y-y3
因式分解：-x3-4xy2+4x2y
若x3+y3=1000,x2y－xy=－496,则（x3－y3）+（4xy2－2x2y）－2（xy2－y3）= ----
x.y取何值时,代数(x3y+3x2y-5xy2+6y3)+(y3+2xy2+x2y-2x3)-(4x2y-x3-3xy2+7y3).y取何值时，代数（x3y+3x2y-5xy2+6y3）+（y3+2xy2+x2y-2x3）-（4x2y-x3-3xy2+7y3）的值都是常数?
若x-y=5,xy=14,则x3-x2y+xy2-y3=?