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(x^2)/12+x+17/12 = 0
1/12*x^2+x+17/12 = 0
DELTA = 1^2-(1/12*17/12*4)
DELTA = 19/36
DELTA > 0
x = ((19/36)^(1/2)-1)/(1/12*2) or x = (-(19/36)^(1/2)-1)/(1/12*2)
x = 6*((19/36)^(1/2)-1) or x = -6*((19/36)^(1/2)+1)
x in { -6*((19/36)^(1/2)+1), 6*((19/36)^(1/2)-1) }
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