(1/x+1)+(2/x+2)-(1/x+1)

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Solution for (1/x+1)+(2/x+2)-(1/x+1) equation: 


D( x )

x = 0

x = 0

x = 0

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

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

1/x+2/x-x^-1-1+1+2 = 0

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

x^-1 = -1

-1 < 0

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

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

-1 = x^1

x = -1

x = -1

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