7x-14/x^2-2x

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Solution for 7x-14/x^2-2x equation: 


D( x )

x^2 = 0

x^2 = 0

x^2 = 0

1*x^2 = 0 // : 1

x^2 = 0

x = 0

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

7*x-(2*x)-(14/(x^2)) = 0

7*x-2*x-14*x^-2 = 0

5*x-14*x^-2 = 0

x*(5-14*x^-3) = 0

-14*x^-3 = -5 // : -14

x^-3 = 5/14

-3 < 0

1/(x^3) = 5/14 // * x^3

1 = 5/14*x^3 // : 5/14

14/5 = x^3

x^3 = 14/5 // ^ 1/3

x = (14/5)^(1/3)

x = 0

x = 0

x in { 0} 

x = (14/5)^(1/3)

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