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x in (-oo:+oo)
6*x^2 = 3*x-(2/4) // - 3*x-(2/4)
6*x^2-(3*x)+2/4 = 0
6*x^2-3*x+2/4 = 0
6*x^2-3*x+1/2 = 0
DELTA = (-3)^2-(1/2*4*6)
DELTA = -3
DELTA < 0
x belongs to the empty set
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