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3*x^2-((27/2)*x^2)-(5*x)-3 = 0
3*x^2+(-27/2)*x^2-5*x-3 = 0
-21/2*x^2-5*x-3 = 0
DELTA = (-5)^2-(-21/2*(-3)*4)
DELTA = -101
DELTA < 0
x belongs to the empty set
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