x^2-9/3-x=0

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Solution for x^2-9/3-x=0 equation: 


x in (-oo:+oo)

x^2-x-(9/3) = 0

x^2-x-3 = 0

x^2-x-3 = 0

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

DELTA = 13

DELTA > 0

x = (13^(1/2)+1)/(1*2) or x = (1-13^(1/2))/(1*2)

x = (13^(1/2)+1)/2 or x = (1-13^(1/2))/2

x in { (1-13^(1/2))/2, (13^(1/2)+1)/2 }

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