3x/x^2-81-1/x-9

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Solution for 3x/x^2-81-1/x-9 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)

(3*x)/(x^2)-(1/x)-81-9 = 0

(3*x)/(x^2)-x^-1-81-9 = 0

2*x^-1 = 90 // : 2

x^-1 = 45

-1 < 0

1/(x^1) = 45 // * x^1

1 = 45*x^1 // : 45

1/45 = x^1

x = 1/45

x = 1/45

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