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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
8*x-(3*4*x)-((12/3)*x)-(16/x)-6 = 0
8*x-12*x-4*x-16*x^-1-6 = 0
-8*x^1-16*x^-1-6*x^0 = 0
(-8*x^2-6*x^1-16*x^0)/(x^1) = 0 // * x^2
x^1*(-8*x^2-6*x^1-16*x^0) = 0
x^1
-8*x^2-6*x-16 = 0
-8*x^2-6*x-16 = 0
DELTA = (-6)^2-(-16*(-8)*4)
DELTA = -476
DELTA < 0
x in { }
x belongs to the empty set
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