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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2/x+3 = 10/8-(5*x) // - 10/8-(5*x)
5*x+2/x-(10/8)+3 = 0
5*x+2/x-5/4+3 = 0
5*x^1+2*x^-1+7/4*x^0 = 0
(5*x^2+7/4*x^1+2*x^0)/(x^1) = 0 // * x^2
x^1*(5*x^2+7/4*x^1+2*x^0) = 0
x^1
5*x^2+(7/4)*x+2 = 0
5*x^2+(7/4)*x+2 = 0
DELTA = (7/4)^2-(2*4*5)
DELTA = -591/16
DELTA < 0
x in { }
x belongs to the empty set
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