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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(4/2)*x-3 = 3/x-2 // - 3/x-2
(4/2)*x-(3/x)-3+2 = 0
(4/2)*x-3*x^-1-3+2 = 0
2*x^1-3*x^-1-1*x^0 = 0
(2*x^2-1*x^1-3*x^0)/(x^1) = 0 // * x^2
x^1*(2*x^2-1*x^1-3*x^0) = 0
x^1
2*x^2-x-3 = 0
2*x^2-x-3 = 0
DELTA = (-1)^2-(-3*2*4)
DELTA = 25
DELTA > 0
x = (25^(1/2)+1)/(2*2) or x = (1-25^(1/2))/(2*2)
x = 3/2 or x = -1
x in { -1, 3/2}
x in { -1, 3/2 }
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