化简(2x/(x+y)一4x/(y-x))÷8x/(x^2-y^2)
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化简(2x/(x+y)一4x/(y-x))÷8x/(x^2-y^2)
化简(2x/(x+y)一4x/(y-x))÷8x/(x^2-y^2)
化简(2x/(x+y)一4x/(y-x))÷8x/(x^2-y^2)
收起
化简(2x/(x+y)一4x/(y-x))÷8x/(x^2-y^2)
化简(2x/(x+y)一4x/(y-x))÷8x/(x^2-y^2)
化简(2x/(x+y)一4x/(y-x))÷8x/(x^2-y^2)
收起