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n in (-oo:+oo)
4*n^2+4*n+1/2 = 0
4*n^2+4*n+1/2 = 0
DELTA = 4^2-(1/2*4*4)
DELTA = 8
DELTA > 0
n = (8^(1/2)-4)/(2*4) or n = (-8^(1/2)-4)/(2*4)
n = (2*2^(1/2)-4)/8 or n = (-2*2^(1/2)-4)/8
n in { (-2*2^(1/2)-4)/8, (2*2^(1/2)-4)/8 }
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