x^2-1/5x

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Solution for x^2-1/5x equation: 


x in (-oo:+oo)

x^2-((1/5)*x) = 0

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

x^2-1/5*x = 0

DELTA = (-1/5)^2-(0*1*4)

DELTA = 1/25

DELTA > 0

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

x = 1/5 or x = 0

x in { 0, 1/5 }

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