x^2/63+16x/63+1=0

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Solution for x^2/63+16x/63+1=0 equation: 


x in (-oo:+oo)

(x^2)/63+(16*x)/63+1 = 0

1/63*x^2+16/63*x+1 = 0

DELTA = (16/63)^2-(1/63*1*4)

DELTA = 4/3969

DELTA > 0

x = ((4/3969)^(1/2)-16/63)/(1/63*2) or x = (-(4/3969)^(1/2)-16/63)/(1/63*2)

x = -7 or x = -9

x in { -9, -7 }

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