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(7*x^2)/3-((55*x^1)/3)-8 = 0
(7*x^2)/3+(-55/3)*x-8 = 0
7/3*x^2-55/3*x-8 = 0
DELTA = (-55/3)^2-(-8*7/3*4)
DELTA = 3697/9
DELTA > 0
x = ((3697/9)^(1/2)+55/3)/(2*7/3) or x = (55/3-(3697/9)^(1/2))/(2*7/3)
x = 3/14*((3697/9)^(1/2)+55/3) or x = 3/14*(55/3-(3697/9)^(1/2))
x in { 3/14*(55/3-(3697/9)^(1/2)), 3/14*((3697/9)^(1/2)+55/3) }
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