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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(3/2)*x+5/x = (5/2)*x-4/3 // - (5/2)*x-4/3
(3/2)*x-((5/2)*x)+5/x-(-4/3) = 0
(3/2)*x+(-5/2)*x+5/x+4/3 = 0
5*x^-1-1*x^1+4/3*x^0 = 0
(4/3*x^1-1*x^2+5*x^0)/(x^1) = 0 // * x^2
x^1*(4/3*x^1-1*x^2+5*x^0) = 0
x^1
(4/3)*x-x^2+5 = 0
(4/3)*x-x^2+5 = 0
DELTA = (4/3)^2-(-1*4*5)
DELTA = 196/9
DELTA > 0
x = ((196/9)^(1/2)-(4/3))/(-1*2) or x = (-(4/3)-(196/9)^(1/2))/(-1*2)
x = -5/3 or x = 3
x in { -5/3, 3}
x in { -5/3, 3 }
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