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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
11/x-x+24/8-8 = 0
11*x^-1-1*x^1-5*x^0 = 0
(11*x^0-1*x^2-5*x^1)/(x^1) = 0 // * x^2
x^1*(11*x^0-1*x^2-5*x^1) = 0
x^1
11-x^2-5*x = 0
11-x^2-5*x = 0
DELTA = (-5)^2-(-1*4*11)
DELTA = 69
DELTA > 0
x = (69^(1/2)+5)/(-1*2) or x = (5-69^(1/2))/(-1*2)
x = (69^(1/2)+5)/(-2) or x = (5-69^(1/2))/(-2)
x in { (69^(1/2)+5)/(-2), (5-69^(1/2))/(-2)}
x in { (69^(1/2)+5)/(-2), (5-69^(1/2))/(-2) }
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