已知x/y=2/3,求(x²-y²)/xy÷[(x+y)(x-y/x)³]

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已知x/y=2/3,求(x²-y²)/xy÷[(x+y)(x-y/x)³]
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已知x/y=2/3,求(x²-y²)/xy÷[(x+y)(x-y/x)³]
已知x/y=2/3,求(x²-y²)/xy÷[(x+y)(x-y/x)³]

已知x/y=2/3,求(x²-y²)/xy÷[(x+y)(x-y/x)³]
x=2y=3 或者负的