4x^2-4xy+y^2/2x+y除以(4x^2-y^2)
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x-y/x^2+xy除以xy-x^2/x^2y^2-x^4*1/x-y
已知X+Y=2XY,求4X-5XY+4Y 除以X+XY+Y 的值
已知X+Y=2XY,求4X-5XY+4Y 除以X+XY+Y 的值
4x^2-4xy+y^2/2x+y除以(4x^2-y^2)
x平方+y平方+2xy分之x平方-4y平方除以x平方+xy分之2y+x
12xy^2/x+y除以4xy/x^2-y^2
8x^2y^4除以(-3x/4y^2)除以(-xy^2/2)
若(2x-14xy-2y)除以(x-2xy-y)=4,则1/x-1/y=
(x/x+y +2y/x+y)乘以xy/ x+2y除以(1/x+1/y)(2)(3x^2/4y)^2乘以2y/3x+ x^2/2y^2除以2y^2/x
(y/(x^2-xy)+x/(y^2-xy))除以(x-y)/(xy)
代数 x^-y^/ x^-(y-z)^ 除以 x^+2xy+y^/(x-y)^-z^ 乘 x^+xy-xz/x^-xy
已知x/y=3/4,那么x平方-y平方/x平方-2xy+y平方除以xy+y平方/x平方-xy
已知x+y除以xy等于4,求2x-5xy+2y除以x+2xy+y的值请写出过程
计算:(1)x^2-4y^2/x^2+2xy+y^2除以x+2y/x^2+xy(2)x+2y/x^2-y^2+y/y^2-x^2-2x/x^2-y^2
(XY-X^2)除以X-Y/XY=?
(xy-x^2)除以xy分之x-y
y²分之(x²-2xy+y²)除以xy分之(y²-xy)乘xy²,其中x=4,y=3.
[(x+y)^2-(x-y)^2]除以2xy