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(1/3)*(3*x-6)^3 = 9 // - 9
(1/3)*(3*x-6)^3-9 = 0
1/3*(3*x-6)^3-9 = 0
1/3*(3*x-6)^3-9 = 0
9*x^3-54*x^2+108*x-81 = 0
9*x^3-54*x^2+108*x-81 = 0
9*(x^3-6*x^2+12*x-9) = 0
x^3-6*x^2+12*x-9 = 0
{ 1, -1, 3, -3, 9, -9 }
1
x = 1
x^3-6*x^2+12*x-9 = -2
1
-1
x = -1
x^3-6*x^2+12*x-9 = -28
-1
3
x = 3
x^3-6*x^2+12*x-9 = 0
3
x-3
x^2-3*x+3
x^3-6*x^2+12*x-9
x-3
3*x^2-x^3
12*x-3*x^2-9
3*x^2-9*x
3*x-9
9-3*x
0
x^2-3*x+3 = 0
DELTA = (-3)^2-(1*3*4)
DELTA = -3
DELTA < 0
x in { 3}
9*(x-3) = 0
9*(x-3) = 0
x-3 = 0 // + 3
x = 3
x = 3
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