4Y(Y-X)^2分之2X(X-Y)^3 约分.你刚才给我解的题你看错了,前面是Y-X,后面是X-Y
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2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
计算:y-x分之x+y+x-y分之y-y-x分之2x-y
y-x分之2x-3y-x-y分之x+2y
2x-3y分之y-x-x+2y分之x-y
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3分之2(x-y)-4分之x+y=-1 8(x+y)-4(2x-y)=16
3分之2(X-Y)-4分之X+Y=-1,3(X+Y)-2(X-Y)=16
化简x+y分之x²-y²-2X-y分之4x(x-y)+y²
解方程组2分之x+y+3分之x-y=6 4(x+y)-5(x-y)=2
已知2x=3y,则y分之x=< >,y分之x+y=< >.
已知x-2y=2,求4x-y-8分之3x+y-6
4Y(Y-X)^2分之2X(X-Y)^3 约分
|x-3y-1|+(x+y)^2=4xy求y分之x
x+2y+x-2y分之4y平方-x-4y平方分之4x平方y
-(5x+y)-7(x-y) -2分之1(x+y)+4分之1(x+2y) 4x-2(x-2) -2x-(3x-1) x-(5x-2y)+2(2x-y)
x-4y分之3x + 4y-x分之x+y - x*x-4y分之7y
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=