2(x*x-3xy-2y*y+2)- =-4y*y-6xy+3x
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![2(x*x-3xy-2y*y+2)- =-4y*y-6xy+3x](/uploads/image/z/1798717-13-7.jpg?t=2%28x%2Ax-3xy-2y%2Ay%2B2%29-+%3D-4y%2Ay-6xy%2B3x)
2(x*x-3xy-2y*y+2)- =-4y*y-6xy+3x
2(x*x-3xy-2y*y+2)- =-4y*y-6xy+3x
2(x*x-3xy-2y*y+2)- =-4y*y-6xy+3x
x*x+xy=3,xy+y*y=2,则x*x+2xy+y*y=________?
(-x+2y)(2x+y)-(2x+y)(y-2x)-3xy=?因式分解
x+y=-3 xy+x+y=-2 x/y+y/x=?
f(xy,x-y)=x^2+3xy+y^2,则f(x,y)=?
若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思,是3x-2xy-3y/x-2xy-y
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
(-3x^y+2xy)-( )=4x^+xy
(x^3-2x^2+xy^2)/(x-y)+(x+y)(y-x)=?
x-y/xy=( )/x^3y^2
X^Y-2XY^2+y^3
已知xy=-2,x-y=3,求(x+y)(x-y)-y^2+(x-y)^2-(6x^2y-2xy^2)÷2y
x^2-4xy+3y^2=(x-3y)(x-y)x^2-4xy+3y^2 怎么分解成(x-3y)(x-y)
x-y/x+y=-1/2,x*x-xy-2y*y/x*x-3xy+2y*y的解是多少?同上,请将过程写出,
当x-y=2xy时,求4x-3xy-4y/xy
已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.
已知x+xy+y=3,则(3x+2xy+3y)/(2x+xy+2y)=
(x+2y-3xy)-(-2x-y+xy),其中x+y=1/2,xy=-1/2
已知x-y=3xy,则2x+3xy-2y除以x-2xy-y=?