x^2=4/36x

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Solution for x^2=4/36x equation: 


x in (-oo:+oo)

x^2 = (4/36)*x // - (4/36)*x

x^2-((4/36)*x) = 0

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

x^2-1/9*x = 0

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

DELTA = 1/81

DELTA > 0

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

x = 1/9 or x = 0

x in { 0, 1/9 }

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