1/10X^2-1/5X-1=0

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Solution for 1/10X^2-1/5X-1=0 equation: 


X in (-oo:+oo)

(1/10)*X^2-((1/5)*X)-1 = 0

(1/10)*X^2+(-1/5)*X-1 = 0

1/10*X^2-1/5*X-1 = 0

DELTA = (-1/5)^2-(-1*1/10*4)

DELTA = 11/25

DELTA > 0

X = ((11/25)^(1/2)+1/5)/(1/10*2) or X = (1/5-(11/25)^(1/2))/(1/10*2)

X = 5*((11/25)^(1/2)+1/5) or X = 5*(1/5-(11/25)^(1/2))

X in { 5*(1/5-(11/25)^(1/2)), 5*((11/25)^(1/2)+1/5) }

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