1/18x^2-1/9x

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Solution for 1/18x^2-1/9x equation: 


x in (-oo:+oo)

(1/18)*x^2-((1/9)*x) = 0

(1/18)*x^2+(-1/9)*x = 0

1/18*x^2-1/9*x = 0

DELTA = (-1/9)^2-(0*1/18*4)

DELTA = 1/81

DELTA > 0

x = ((1/81)^(1/2)+1/9)/(1/18*2) or x = (1/9-(1/81)^(1/2))/(1/18*2)

x = 2 or x = 0

x in { 0, 2 }

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