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4*x^2+23*x+(15/4)*x+3 = 0
4*x^2+107/4*x+3 = 0
DELTA = (107/4)^2-(3*4*4)
DELTA = 10681/16
DELTA > 0
x = ((10681/16)^(1/2)-107/4)/(2*4) or x = (-(10681/16)^(1/2)-107/4)/(2*4)
x = ((10681/16)^(1/2)-107/4)/8 or x = (-((10681/16)^(1/2)+107/4))/8
x in { (-((10681/16)^(1/2)+107/4))/8, ((10681/16)^(1/2)-107/4)/8 }
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