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2*x^2+7*x+(3/2)*x+1 = 0
2*x^2+17/2*x+1 = 0
DELTA = (17/2)^2-(1*2*4)
DELTA = 257/4
DELTA > 0
x = ((257/4)^(1/2)-17/2)/(2*2) or x = (-(257/4)^(1/2)-17/2)/(2*2)
x = ((257/4)^(1/2)-17/2)/4 or x = (-((257/4)^(1/2)+17/2))/4
x in { (-((257/4)^(1/2)+17/2))/4, ((257/4)^(1/2)-17/2)/4 }
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