2x(x-y)4-x2(x-y)2+xy(y-x)2 如何因式分解
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2x(x-y)4-x2(x-y)2+xy(y-x)2 如何因式分解
2x(x-y)4-x2(x-y)2+xy(y-x)2 如何因式分解
2x(x-y)4-x2(x-y)2+xy(y-x)2 如何因式分解
原式=2x(x-y)4-x2(x-y)2+xy(x-y)2
=x(x-y)2{2(x-y)2-x+y}
=x(x-y)2{2(x-y)2-(x-y)}
=x(x-y)3(2x-2y-1)
(x-y)[4x(1-y)]
=(2x-4x-2xy)(x-y)
=-2x(1+y)(x-y)
2x(x-y)4-x2(x-y)2+xy(y-x)2 如何因式分解
若x-y/x+y=2,则x2+2xy+y2/4xy=多少
计算(x+y/x-y + 4xy/y2-x2)(x2-9y2)/(x2+2xy-3y2)
4x2-y2/x2-2xy+y2 +(2x-y)/2x2-2xy
已知x.y满足X2-y2=2xy.则x-y/x+y=?x.
因式分解3x2+xy-y2+x+9y-43X^2+XY-Y^2+X+9Y-4
(xy-x^2)-(x2-2xy+y^2)/xy×(x^2-y^2)/x^2 -xy-y^2
因式分解x2-4xy+4y2+x-2y-2
x2-4xy+4y2-x+2y-2因式分解
(-x-2y)(x2-2xy+4y2)等于多少
2x2+xy-y2-4x+5y-6 因式分解
2x2+xy-3y2+x+4y-1因式分解
已知x/y+y/x=2,求(x2+xy+y2)/(x2-4xy+y2)的值
化简(2x+y)(2x-y)+(x+y)2次方-2(2x2次方-xy)
因式分解x2+y-xy-x
(x-y)(x2+xy+y2)
(x+y)(x2-xy+y2)
整数x,y满足x2-y2=2xy,求x-y/x+y的值