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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
3/x-2 = (5/2)*x-(3/2) // - (5/2)*x-(3/2)
3/x-((5/2)*x)+3/2-2 = 0
(-5/2)*x+3/x+3/2-2 = 0
3*x^-1-5/2*x^1-1/2*x^0 = 0
(3*x^0-5/2*x^2-1/2*x^1)/(x^1) = 0 // * x^2
x^1*(3*x^0-5/2*x^2-1/2*x^1) = 0
x^1
(-5/2)*x^2+(-1/2)*x+3 = 0
(-5/2)*x^2+(-1/2)*x+3 = 0
DELTA = (-1/2)^2-(3*4*(-5/2))
DELTA = 121/4
DELTA > 0
x = ((121/4)^(1/2)-(-1/2))/(2*(-5/2)) or x = (-(-1/2)-(121/4)^(1/2))/(2*(-5/2))
x = -6/5 or x = 1
x in { -6/5, 1}
x in { -6/5, 1 }
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