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X in (-oo:+oo)
((X-6)^2)/3 = 25 // - 25
((X-6)^2)/3-25 = 0
((X-6)^2)/3+(-25*3)/3 = 0
(X-6)^2-25*3 = 0
X^2-12*X-39 = 0
X^2-12*X-39 = 0
X^2-12*X-39 = 0
DELTA = (-12)^2-(-39*1*4)
DELTA = 300
DELTA > 0
X = (300^(1/2)+12)/(1*2) or X = (12-300^(1/2))/(1*2)
X = (10*3^(1/2)+12)/2 or X = (12-10*3^(1/2))/2
(X-((12-10*3^(1/2))/2))*(X-((10*3^(1/2)+12)/2)) = 0
((X-((12-10*3^(1/2))/2))*(X-((10*3^(1/2)+12)/2)))/3 = 0
((X-((12-10*3^(1/2))/2))*(X-((10*3^(1/2)+12)/2)))/3 = 0 // * 3
(X-((12-10*3^(1/2))/2))*(X-((10*3^(1/2)+12)/2)) = 0
( X-((10*3^(1/2)+12)/2) )
X-((10*3^(1/2)+12)/2) = 0 // + (10*3^(1/2)+12)/2
X = (10*3^(1/2)+12)/2
( X-((12-10*3^(1/2))/2) )
X-((12-10*3^(1/2))/2) = 0 // + (12-10*3^(1/2))/2
X = (12-10*3^(1/2))/2
X in { (10*3^(1/2)+12)/2, (12-10*3^(1/2))/2 }
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