Solve this quartic equation?

Questions
, ,
1

I am 4 days on it and i can’t solve it. Please, any suggestions? I checked some calculators on line. but I don’t have the solution yet:

Factorize:

x^4-2x^3-9x^2-3x-1
2

For an analytic solution of this quartic:

Solve[x^4 - 2 x^3 - 9 x^2 - 3 x - 1 == 0, x, Quartics -> True]

or for a numerical version

N[Solve[x^4 - 2 x^3 - 9 x^2 - 3 x - 1 == 0, x]]