x-3-(6/x+2)

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Solution for x-3-(6/x+2) equation: 


D( x )

x = 0

x = 0

x = 0

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

x-(6/x)-3-2 = 0

x-6*x^-1-3-2 = 0

1*x^1-6*x^-1-5*x^0 = 0

(1*x^2-5*x^1-6*x^0)/(x^1) = 0 // * x^2

x^1*(1*x^2-5*x^1-6*x^0) = 0

x^1

x^2-5*x-6 = 0

x^2-5*x-6 = 0

DELTA = (-5)^2-(-6*1*4)

DELTA = 49

DELTA > 0

x = (49^(1/2)+5)/(1*2) or x = (5-49^(1/2))/(1*2)

x = 6 or x = -1

x in { -1, 6} 

x in { -1, 6 }

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