X^2-(1/5)X-(11/5)=0

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Solution for X^2-(1/5)X-(11/5)=0 equation: 


X in (-oo:+oo)

X^2-((1/5)*X)-(11/5) = 0

X^2+(-1/5)*X-11/5 = 0

X^2-1/5*X-11/5 = 0

DELTA = (-1/5)^2-(-11/5*1*4)

DELTA = 221/25

DELTA > 0

X = ((221/25)^(1/2)+1/5)/(1*2) or X = (1/5-(221/25)^(1/2))/(1*2)

X = ((221/25)^(1/2)+1/5)/2 or X = (1/5-(221/25)^(1/2))/2

X in { (1/5-(221/25)^(1/2))/2, ((221/25)^(1/2)+1/5)/2 }

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