x^2-2x/5-8/25=0

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Solution for x^2-2x/5-8/25=0 equation: 


x in (-oo:+oo)

x^2-((2*x)/5)-(8/25) = 0

x^2+(-2/5)*x-8/25 = 0

x^2-2/5*x-8/25 = 0

DELTA = (-2/5)^2-(-8/25*1*4)

DELTA = 36/25

DELTA > 0

x = ((36/25)^(1/2)+2/5)/(1*2) or x = (2/5-(36/25)^(1/2))/(1*2)

x = 4/5 or x = -2/5

x in { -2/5, 4/5 }

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