X-Y-1分之X方-2XY+Y方-1 化简

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X-Y-1分之X方-2XY+Y方-1 化简

X-Y-1分之X方-2XY+Y方-1 化简
X-Y-1分之X方-2XY+Y方-1 化简

X-Y-1分之X方-2XY+Y方-1 化简
(x^2-2xy+y^2-1)/(x-y-1)
=[(x-y)^2-1]/(x-y-1)
=(x-y+1)(x-y-1)/(x-y-1)
=x-y+1