# Solve this quartic equation?

**URL:** <https://community.wolfram.com/t/solve-this-quartic-equation/15046>\
**Category:** Questions\
**Tags:** algebra, numerical-computation, symbolic-computations\
**Created:** [November 26, 2019, 10:00pm UTC](https://community.wolfram.com/t/solve-this-quartic-equation/15046 "2019-11-26T22:00:34Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![acahuanach](https://yyz1.discourse-cdn.com/wolfram/user_avatar/community.wolfram.com/acahuanach/32/5470_2.png) [@acahuanach](https://community.wolfram.com/u/acahuanach)\
**Post date:** [November 26, 2019, 10:00pm UTC](https://community.wolfram.com/t/solve-this-quartic-equation/15046/1 "2019-11-26T22:00:34Z")

</div>

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

```

---

<div class="post-metadata">

**Author:** ![dreiss1](https://yyz1.discourse-cdn.com/wolfram/user_avatar/community.wolfram.com/dreiss1/32/6907_2.png) [@dreiss1](https://community.wolfram.com/u/dreiss1)\
**Post date:** [November 26, 2019, 10:12pm UTC](https://community.wolfram.com/t/solve-this-quartic-equation/15046/2 "2019-11-26T22:12:33Z")

</div>

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]]

```