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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
5/x-((3/2)*x) = 0
(-3/2)*x+5/x = 0
5*x^-1-3/2*x^1 = 0
(5*x^0-3/2*x^2)/(x^1) = 0 // * x^2
x^1*(5*x^0-3/2*x^2) = 0
x^1
(-3/2)*x^2+5 = 0
(-3/2)*x^2+5 = 0
DELTA = 0^2-(4*5*(-3/2))
DELTA = 30
DELTA > 0
x = (30^(1/2)+0)/(2*(-3/2)) or x = (0-30^(1/2))/(2*(-3/2))
x = (30^(1/2))/(-3) or x = (30^(1/2))/3
x in { (30^(1/2))/(-3), (30^(1/2))/3}
x in { (30^(1/2))/(-3), (30^(1/2))/3 }
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