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X in (-oo:+oo)
((X-3)^2)/3 = 49 // - 49
((X-3)^2)/3-49 = 0
((X-3)^2)/3+(-49*3)/3 = 0
(X-3)^2-49*3 = 0
X^2-6*X-138 = 0
X^2-6*X-138 = 0
X^2-6*X-138 = 0
DELTA = (-6)^2-(-138*1*4)
DELTA = 588
DELTA > 0
X = (588^(1/2)+6)/(1*2) or X = (6-588^(1/2))/(1*2)
X = (14*3^(1/2)+6)/2 or X = (6-14*3^(1/2))/2
(X-((6-14*3^(1/2))/2))*(X-((14*3^(1/2)+6)/2)) = 0
((X-((6-14*3^(1/2))/2))*(X-((14*3^(1/2)+6)/2)))/3 = 0
((X-((6-14*3^(1/2))/2))*(X-((14*3^(1/2)+6)/2)))/3 = 0 // * 3
(X-((6-14*3^(1/2))/2))*(X-((14*3^(1/2)+6)/2)) = 0
( X-((14*3^(1/2)+6)/2) )
X-((14*3^(1/2)+6)/2) = 0 // + (14*3^(1/2)+6)/2
X = (14*3^(1/2)+6)/2
( X-((6-14*3^(1/2))/2) )
X-((6-14*3^(1/2))/2) = 0 // + (6-14*3^(1/2))/2
X = (6-14*3^(1/2))/2
X in { (14*3^(1/2)+6)/2, (6-14*3^(1/2))/2 }
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