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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
x+2/x-3 = -4/6 // + -4/6
x+2/x-(-4/6)-3 = 0
x+2/x+2/3-3 = 0
1*x^1+2*x^-1-7/3*x^0 = 0
(1*x^2-7/3*x^1+2*x^0)/(x^1) = 0 // * x^2
x^1*(1*x^2-7/3*x^1+2*x^0) = 0
x^1
x^2+(-7/3)*x+2 = 0
x^2+(-7/3)*x+2 = 0
DELTA = (-7/3)^2-(1*2*4)
DELTA = -23/9
DELTA < 0
x in { }
x belongs to the empty set
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