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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
X^2+14*x+38/x+8 = 0
14*x^1+38*x^-1+8*x^0 = 0
(14*x^2+8*x^1+38*x^0)/(x^1) = 0 // * x^2
x^1*(14*x^2+8*x^1+38*x^0) = 0
x^1
14*x^2+8*x+38 = 0
14*x^2+8*x+38 = 0
DELTA = 8^2-(4*14*38)
DELTA = -2064
DELTA < 0
x in { }
x belongs to the empty set
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