(x+y分之x + x+y分之2y)除以x+2y分之xy除以(x分之1+y分之1)
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(x+y分之x + x+y分之2y)除以x+2y分之xy除以(x分之1+y分之1)
(x+y分之x + x+y分之2y)除以x+2y分之xy除以(x分之1+y分之1)
(x+y分之x + x+y分之2y)除以x+2y分之xy除以(x分之1+y分之1)
[x/(x+y)+2y/(x+y)]÷xy/(x+2y)÷(1/x+1/y)
=(x+2y)/(x+y)×(x+2y)/xy×xy/(x+y)
=(x+2y)^2/(x+y)^2.
(y分之x减x分之y)除以(y分之x-2)除以(1+x分之y)
(x+y分之x + x+y分之2y)除以x+2y分之xy除以(x分之1+y分之1)
xy分之x^2-y^2除以(x-y)
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数学化简:x^4-y^4分之x+y除以x+y^2分之1
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(x-y分之1)除以(y-x分之1)
(1+x分之y)除以(1-x分之y)
x^2-y分之y(x-y)-x(x+y)除以x+y分之x^2+y^2.其中x=2,y=-1.先化简再求值.
(X+Y分之X+X+Y分之2Y)乘X+2Y分之XY除以(X分之1+Y分之1)要有过程
X+Y分之X+X+Y分之2Y)乘X+2Y分之XY除以(X分之1+Y分之1)得?
x分之x^2-y^2除以x^2+xy分之x-y
计算x+2y分之x-y除以x的平方-4y的平方分之2x-2y
若x.y满足x+=4和x-y=2,求xy分之2x-y+1除以-x分之y+y分之x的值
x-y分之1-x+y分之1)除以x的平方-y的平方分之xy的平方顺便再给我解释下(x-y分之1-x+y分之1)除以x^2-2xy+y^2分之2y.最后答案为2y/(x-y)(x+y)×(x-y)^2/2y=x-y/x+y为什么(x-y分之1-x+y分之1)=2y/(x-y)(x+y)
已知x-y除以x+y=3,求代数式x+y分之2(x-y)-3(x-y)分之x+y的值.
(x+y分之x + x+y分之2y)乘x+2y分之xy 除以(x分之1+y分之1)同样用两...(x+y分之x + x+y分之2y)乘x+2y分之xy 除以(x分之1+y分之1)同样用两种方式解答喔.
【x-y-(x-y分之4y平方)】【x+y-(x+y分之4x平方)】除以【3(x+y)-x-y分之8xy】