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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
3*x+(2/2)*x+3 = x-(14/x)-5 // - x-(14/x)-5
3*x+(2/2)*x-x+14/x+3+5 = 0
3*x^1+14*x^-1+8*x^0 = 0
(3*x^2+8*x^1+14*x^0)/(x^1) = 0 // * x^2
x^1*(3*x^2+8*x^1+14*x^0) = 0
x^1
3*x^2+8*x+14 = 0
3*x^2+8*x+14 = 0
DELTA = 8^2-(3*4*14)
DELTA = -104
DELTA < 0
x in { }
x belongs to the empty set
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