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x^2+14*x+(49/3)*x-5 = 0
x^2+91/3*x-5 = 0
DELTA = (91/3)^2-(-5*1*4)
DELTA = 8461/9
DELTA > 0
x = ((8461/9)^(1/2)-91/3)/(1*2) or x = (-(8461/9)^(1/2)-91/3)/(1*2)
x = ((8461/9)^(1/2)-91/3)/2 or x = (-((8461/9)^(1/2)+91/3))/2
x in { (-((8461/9)^(1/2)+91/3))/2, ((8461/9)^(1/2)-91/3)/2 }
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