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(49*x^2)/3-((x^1)/3)-6 = 0
(49*x^2)/3-(x/3)-6 = 0
49/3*x^2-1/3*x-6 = 0
DELTA = (-1/3)^2-(-6*4*49/3)
DELTA = 3529/9
DELTA > 0
x = ((3529/9)^(1/2)+1/3)/(2*49/3) or x = (1/3-(3529/9)^(1/2))/(2*49/3)
x = 3/98*((3529/9)^(1/2)+1/3) or x = 3/98*(1/3-(3529/9)^(1/2))
x in { 3/98*(1/3-(3529/9)^(1/2)), 3/98*((3529/9)^(1/2)+1/3) }
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