[2 1 0]
[0 3 1]
[1 1 1]
[1 0 4]
[0 1 2]
[0 0 5]
[1 0 0]
[0 1 0]
[0 0 1]
5
[(1, [
(1, -1, 2)
], 1), (1.381966011250106?, [(1, -0.618033988749895?, 1)], 1), (3.618033988749895?, [(1, 1.618033988749895?, 1)], 1)]
[ 2/5 -1/5 1/5]
[ 1/5 2/5 -2/5]
[-3/5 -1/5 6/5]
x^3 - 6*x^2 + 10*x - 5
(x - 1) * (x^2 - 5*x + 5)