(2)-(8/x)/(x)

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Solution for (2)-(8/x)/(x) equation: 


D( x )

x = 0

x = 0

x = 0

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

2-((8/x)/x) = 0

2-8*x^-2 = 0

-8*x^-2 = -2 // : -8

x^-2 = 1/4

-2 < 0

1/(x^2) = 1/4 // * x^2

1 = 1/4*x^2 // : 1/4

4 = x^2

x^2 = 4 // ^ 1/2

abs(x) = 2

x = 2 or x = -2

x in { 2, -2 }

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