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x in (-oo:+oo)
(1/8)*(x-1)^3-8 = 0
1/8*(x-1)^3-8 = 0
1/8*(x-1)^3-8 = 0
1/8*x^3-3/8*x^2+3/8*x-65/8 = 0
1/8*x^3-3/8*x^2+3/8*x-65/8 = 0
1/8*(x^3-3*x^2+3*x-65) = 0
x^3-3*x^2+3*x-65 = 0
{ 1, -1, 5, -5, 13, -13, 65, -65 }
1
x = 1
x^3-3*x^2+3*x-65 = -64
1
-1
x = -1
x^3-3*x^2+3*x-65 = -72
-1
5
x = 5
x^3-3*x^2+3*x-65 = 0
5
x-5
x^2+2*x+13
x^3-3*x^2+3*x-65
x-5
5*x^2-x^3
2*x^2+3*x-65
10*x-2*x^2
13*x-65
65-13*x
0
x^2+2*x+13 = 0
DELTA = 2^2-(1*4*13)
DELTA = -48
DELTA < 0
x in { 5}
1/8*(x-5) = 0
1/8*(x-5) = 0
( 1/8 )
1/8 = 0
x belongs to the empty set
( x-5 )
x-5 = 0 // + 5
x = 5
x = 5
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