4/x+9-3/x-9=4x/x^2-81

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Solution for 4/x+9-3/x-9=4x/x^2-81 equation: 


D( x )

x = 0

x^2 = 0

x = 0

x = 0

x^2 = 0

x^2 = 0

1*x^2 = 0 // : 1

x^2 = 0

x = 0

x in (-oo:0) U (0:+oo)

4/x-(3/x)-9+9 = (4*x)/(x^2)-81 // - (4*x)/(x^2)-81

4/x-(3/x)-((4*x)/(x^2))-9+9+81 = 0

4/x-3*x^-1-4*x^-1-9+9+81 = 0

-3*x^-1 = -81 // : -3

x^-1 = 27

-1 < 0

1/(x^1) = 27 // * x^1

1 = 27*x^1 // : 27

1/27 = x^1

x = 1/27

x = 1/27

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