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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
3*x-(24/x)-8 = 0
3*x-24*x^-1-8 = 0
3*x^1-24*x^-1-8*x^0 = 0
(3*x^2-8*x^1-24*x^0)/(x^1) = 0 // * x^2
x^1*(3*x^2-8*x^1-24*x^0) = 0
x^1
3*x^2-8*x-24 = 0
3*x^2-8*x-24 = 0
DELTA = (-8)^2-(-24*3*4)
DELTA = 352
DELTA > 0
x = (352^(1/2)+8)/(2*3) or x = (8-352^(1/2))/(2*3)
x = (4*22^(1/2)+8)/6 or x = (8-4*22^(1/2))/6
x in { (8-4*22^(1/2))/6, (4*22^(1/2)+8)/6}
x in { (8-4*22^(1/2))/6, (4*22^(1/2)+8)/6 }
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