1/14x^2-1/7x-1=0

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Solution for 1/14x^2-1/7x-1=0 equation: 


x in (-oo:+oo)

(1/14)*x^2-((1/7)*x)-1 = 0

(1/14)*x^2+(-1/7)*x-1 = 0

1/14*x^2-1/7*x-1 = 0

DELTA = (-1/7)^2-(-1*1/14*4)

DELTA = 15/49

DELTA > 0

x = ((15/49)^(1/2)+1/7)/(1/14*2) or x = (1/7-(15/49)^(1/2))/(1/14*2)

x = 7*((15/49)^(1/2)+1/7) or x = 7*(1/7-(15/49)^(1/2))

x in { 7*(1/7-(15/49)^(1/2)), 7*((15/49)^(1/2)+1/7) }

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