gap-radiroot software package provides GAP RadiRoot - Roots of a Polynomial as Radicals, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gap-radiroot
gap-radiroot is installed in your system.
Make ensure the gap-radiroot package were installed using the commands given below,
$ sudo dpkg-query -l | grep gap-radiroot *
You will get with gap-radiroot package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Mathematics |
| Package | gap-radiroot |
| Version | 2.7-2 |
| Description | GAP RadiRoot - Roots of a Polynomial as Radicals |
| Sub Section | Math |