已知xy=6,x+y=-4,化简x√(x/y)+y√(y/x)
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已知xy=6,x+y=-4,化简x√(x/y)+y√(y/x)
已知x+y=6,xy=4,x>y,则√x-√y/√x+√y=?
已知x+y=6,xy=4,x>y则√x-√y/√x+√y
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