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