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(6*x^2)/3-((23*x^1)/3)-4 = 0
(6*x^2)/3+(-23/3)*x-4 = 0
2*x^2-23/3*x-4 = 0
DELTA = (-23/3)^2-(-4*2*4)
DELTA = 817/9
DELTA > 0
x = ((817/9)^(1/2)+23/3)/(2*2) or x = (23/3-(817/9)^(1/2))/(2*2)
x = ((817/9)^(1/2)+23/3)/4 or x = (23/3-(817/9)^(1/2))/4
x in { (23/3-(817/9)^(1/2))/4, ((817/9)^(1/2)+23/3)/4 }
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