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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
3*x-((2/2)*x)+1 = x-(14/x)-5 // - x-(14/x)-5
3*x-((2/2)*x)-x+14/x+1+5 = 0
3*x-x-x+14/x+1+5 = 0
1*x^1+14*x^-1+6*x^0 = 0
(1*x^2+6*x^1+14*x^0)/(x^1) = 0 // * x^2
x^1*(1*x^2+6*x^1+14*x^0) = 0
x^1
x^2+6*x+14 = 0
x^2+6*x+14 = 0
DELTA = 6^2-(1*4*14)
DELTA = -20
DELTA < 0
x in { }
x belongs to the empty set
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