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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
-5/x = (11/3)*x-6 // - (11/3)*x-6
6-((11/3)*x)-5/x = 0
(-11/3)*x-5/x+6 = 0
6*x^0-11/3*x^1-5*x^-1 = 0
(6*x^1-11/3*x^2-5*x^0)/(x^1) = 0 // * x^2
x^1*(6*x^1-11/3*x^2-5*x^0) = 0
x^1
(-11/3)*x^2+6*x-5 = 0
(-11/3)*x^2+6*x-5 = 0
DELTA = 6^2-(-5*4*(-11/3))
DELTA = -112/3
DELTA < 0
x in { }
x belongs to the empty set
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