3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少?
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3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少?3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-x
3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少?
3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少?
3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少?
3y/(x^2-y^2)+x/(x^2-2xy+y^2)+6y^2/(x^3-x^2y-xy^2+y^3)
=3y/[(x+y)(x-y)]+x/(x-y)^2+6y^2/[(x-y)^2(x+y)]
=3y(x-y)/[(x-y)^2(x+y)]+x(x+y)/[(x-y)^2(x+y)]+6y^2/[(x-y)^2(x+y)]
=[3y(x-y)+x(x+y)+6y^2]/[(x-y)^2(x+y)]
=(x^2+4xy+3y^2)/[(x-y)^2(x+y)]
=(x+3y)(x+y)/[(x-y)^2(x+y)]
=(x+3y)/(x-y)^2
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
[x(x^2y^2-xy)-y(x^2-x^3y)]/(2x^2y)
-x-3xy+y
-xy^2(x+y)^3+x(x+y)^2因式分解
(x+3y)/(x^2+xy)-x+y计算题
(-x-y)(x^2+xy+y^2)
化简x^-y^/x^-2xy+y^
2*(x-y)²(y-x)(xy)
x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x²
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)
化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少?
xy(x-y)-x(x-y)²
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
X-Y/2X+2Y XY/X+Y²
因式分解：x×x-xy-2y×y-x-y