1/x+2/x+1

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Solution for 1/x+2/x+1 equation: 


D( x )

x = 0

x = 0

x = 0

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

1/x+2/x+1 = 0

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

x^-1 = -1/3

-1 < 0

1/(x^1) = -1/3 // * x^1

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

-3 = x^1

x = -3

x = -3

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