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x*((27*x^4-(18*x^3)+9*x^2)/3) = 0
x*((27*x^4-18*x^3+9*x^2)/3) = 0
(x*(27*x^4-18*x^3+9*x^2))/3 = 0
27*x^4-18*x^3+9*x^2 = 0
9*x^2*(3*x^2-2*x+1) = 0
3*x^2-2*x+1 = 0
DELTA = (-2)^2-(1*3*4)
DELTA = -8
DELTA < 0
9*x^2 = 0
(9*x*x^2)/3 = 0
( 9*x^2 )
9*x^2 = 0 // : 9
x^2 = 0
x = 0
( x )
x = 0
x in { 0, 0 }
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