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3*x^2+13*x-(10/3) = 0
3*x^2+13*x-10/3 = 0
3*x^2+13*x-10/3 = 0
DELTA = 13^2-(-10/3*3*4)
DELTA = 209
DELTA > 0
x = (209^(1/2)-13)/(2*3) or x = (-209^(1/2)-13)/(2*3)
x = (209^(1/2)-13)/6 or x = (-(209^(1/2)+13))/6
x in { (-(209^(1/2)+13))/6, (209^(1/2)-13)/6 }
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