n^2+1/4n

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Solution for n^2+1/4n equation: 


n in (-oo:+oo)

n^2+(1/4)*n = 0

n^2+1/4*n = 0

DELTA = (1/4)^2-(0*1*4)

DELTA = 1/16

DELTA > 0

n = ((1/16)^(1/2)-1/4)/(1*2) or n = (-(1/16)^(1/2)-1/4)/(1*2)

n = 0 or n = -1/4

n in { -1/4, 0 }

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