x3-2x2y+xy2-x
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x3-2x2y+xy2-x
x3-2x2y+xy2-x
x3-2x2y+xy2-x
x3-2x2y+xy2-x
=X(X^2-2XY+Y^2)-X
=X(X-Y)^2-X
=X[(X-Y)^2-1]
=X{(X-Y-1)(X-Y+1)]
=X(X-Y-1)(X-Y+1)
不懂的欢迎追问,
x3-2x2y+xy2-x
因式分解:x3-2x2y+xy2
(X3-2x2y+xy2)÷(x3-xy2)要求约分
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?
x3+2x2y+2xy2+y3因式分解
分解因式:x3+xy2-2x2y
已知X大于Y,试比较X3-X2y+XY2与X2Y-XY2+Y3的大小.
(4xy2-2x2y)-( )=x3-2x2y+4xy2+y3.
因式分解:x3-y3-x2y+xy2
x3+x2y-xy2-y3=
已知x>y,试比较x3-x2y+xy2与x2y-xy2+y3的大小!题中的2、3均为x、y 的2、3次方!急
试说明:无论x,y取何值时,代数式(x3+3x2y-5+6y3)+(y3+2xy2+x2y-2x3)-(4x2y-x3-3xy2+7y2)的值是常数.要具体过程,注意格式
3x2y+xy2-[2xy2-4x2y+(x2y-2xy2)]
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
(2x3-3x2y-2xy2)-(x3-2xy2+y3)+(-x3+3x2y-y3)当x=1/2,y=-1时,求值.当x=-1/2,y=-1时,求值.
因式分解:-x3-2x2y-x
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