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2*x^2+12*x+24/2 = 0
2*x^2+12*x+12 = 0
DELTA = 12^2-(2*4*12)
DELTA = 48
DELTA > 0
x = (48^(1/2)-12)/(2*2) or x = (-48^(1/2)-12)/(2*2)
x = (4*3^(1/2)-12)/4 or x = (-4*3^(1/2)-12)/4
x in { (-4*3^(1/2)-12)/4, (4*3^(1/2)-12)/4 }
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