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