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3*x^2-((4/3)*x^2)+4*x-(14*x)+8 = 0
3*x^2+(-4/3)*x^2+4*x-14*x+8 = 0
5/3*x^2-10*x+8 = 0
DELTA = (-10)^2-(5/3*4*8)
DELTA = 140/3
DELTA > 0
x = ((140/3)^(1/2)+10)/(5/3*2) or x = (10-(140/3)^(1/2))/(5/3*2)
x = 3/10*((140/3)^(1/2)+10) or x = 3/10*(10-(140/3)^(1/2))
x in { 3/10*(10-(140/3)^(1/2)), 3/10*((140/3)^(1/2)+10) }
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