-1/x-2/5

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Solution for -1/x-2/5 equation: 


D( x )

x = 0

x = 0

x = 0

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

-1/x-(2/5) = 0

-1/x-2/5 = 0

-1*x^-1 = 2/5 // : -1

x^-1 = -2/5

-1 < 0

1/(x^1) = -2/5 // * x^1

1 = -2/5*x^1 // : -2/5

-5/2 = x^1

x = -5/2

x = -5/2

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