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(2*x^2)/2-((3*x)/2)+5/2 = 0
(2*x^2)/2+(-3/2)*x+5/2 = 0
x^2-3/2*x+5/2 = 0
DELTA = (-3/2)^2-(1*5/2*4)
DELTA = -31/4
DELTA < 0
x belongs to the empty set
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