((3/x)-1)*(3/(x+1))

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Solution for ((3/x)-1)*(3/(x+1)) equation: 


D( x )

x = 0

x+1 = 0

x = 0

x = 0

x+1 = 0

x+1 = 0

x+1 = 0 // - 1

x = -1

x in (-oo:-1) U (-1:0) U (0:+oo)

(3/x-1)*(3/(x+1)) = 0

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