x^2-x/3-2/3=0

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Solution for x^2-x/3-2/3=0 equation: 


x in (-oo:+oo)

x^2-(x/3)-(2/3) = 0

x^2-(x/3)-2/3 = 0

x^2-1/3*x-2/3 = 0

DELTA = (-1/3)^2-(-2/3*1*4)

DELTA = 25/9

DELTA > 0

x = ((25/9)^(1/2)+1/3)/(1*2) or x = (1/3-(25/9)^(1/2))/(1*2)

x = 1 or x = -2/3

x in { -2/3, 1 }

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