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(1/54)*x^2+2*x = 0
1/54*x^2+2*x = 0
DELTA = 2^2-(0*1/54*4)
DELTA = 4
DELTA > 0
x = (4^(1/2)-2)/(1/54*2) or x = (-4^(1/2)-2)/(1/54*2)
x = 0 or x = -108
x in { -108, 0 }
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