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(1/2)*x^2-((1/3)*x)+2 = 0
(1/2)*x^2+(-1/3)*x+2 = 0
1/2*x^2-1/3*x+2 = 0
DELTA = (-1/3)^2-(1/2*2*4)
DELTA = -35/9
DELTA < 0
x belongs to the empty set
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