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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
X-(3/x) = x-(4/x)-2 // - x-(4/x)-2
X-x-(3/x)+4/x+2 = 0
X-x-3*x^-1+4/x+2 = 0
1*x^-1-1*x^1+2*x^0 = 0
(2*x^1-1*x^2+1*x^0)/(x^1) = 0 // * x^2
x^1*(2*x^1-1*x^2+1*x^0) = 0
x^1
2*x-x^2+1 = 0
2*x-x^2+1 = 0
DELTA = 2^2-(-1*1*4)
DELTA = 8
DELTA > 0
x = (8^(1/2)-2)/(-1*2) or x = (-8^(1/2)-2)/(-1*2)
x = (2*2^(1/2)-2)/(-2) or x = (-2*2^(1/2)-2)/(-2)
x in { (2*2^(1/2)-2)/(-2), (-2*2^(1/2)-2)/(-2)}
x in { (2*2^(1/2)-2)/(-2), (-2*2^(1/2)-2)/(-2) }
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