9-x^2/3-x

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


x in (-oo:+oo)

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

9-1/3*x^2-x = 0

DELTA = (-1)^2-(-1/3*4*9)

DELTA = 13

DELTA > 0

x = (13^(1/2)+1)/(-1/3*2) or x = (1-13^(1/2))/(-1/3*2)

x = -3/2*(13^(1/2)+1) or x = -3/2*(1-13^(1/2))

x in { -3/2*(13^(1/2)+1), -3/2*(1-13^(1/2)) }

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