作业帮已知x=2008,y=2006,求x-x÷{x^2-y^2/x^3+y^3[(x-x^2+y^2/y)÷(1/x-1/y)]}的值
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![已知x=2008,y=2006,求x-x÷{x^2-y^2/x^3+y^3[(x-x^2+y^2/y)÷(1/x-1/y)]}的值](/uploads/image/z/14776535-47-5.jpg?t=%E5%B7%B2%E7%9F%A5x%3D2008%2Cy%3D2006%2C%E6%B1%82x-x%C3%B7%7Bx%5E2-y%5E2%2Fx%5E3%2By%5E3%5B%28x-x%5E2%2By%5E2%2Fy%29%C3%B7%281%2Fx-1%2Fy%29%5D%7D%E7%9A%84%E5%80%BC)
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已知x=2008,y=2006,求x-x÷{x^2-y^2/x^3+y^3[(x-x^2+y^2/y)÷(1/x-1/y)]}的值
已知x=2008,y=2006,求x-x÷{x^2-y^2/x^3+y^3[(x-x^2+y^2/y)÷(1/x-1/y)]}的值
已知x=2008,y=2006,求x-x÷{x^2-y^2/x^3+y^3[(x-x^2+y^2/y)÷(1/x-1/y)]}的值
x-x÷{x^2-y^2/x^3+y^3[(x-x^2+y^2/y)÷(1/x-1/y)]}
=x-x÷{(x+y)(x-y)/(x+y)(x^2-xy+y^2)[((xy-x^2+y^2)/y)÷(y-x/xy)]}
=x-x÷{(x-y)/(x^2-xy+y^2)[((x^2-xy+y^2)/y)*(xy/(x-y))]}
=x-x÷{(x-y)/(x^2-xy+y^2)*x(x^2-xy+y^2)/(x-y)}
=x-x÷x
=x-1
=2008-1
=2007
尽管你写的辛苦，但是我判断不出来分子都包括什么，请多加几个括弧，小括弧就行。
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