Finding polynomial roots is limited to only the first 4 values of the polynomial

[purpshell]

Describe the bug
When using findRoot, it is impossible to find the root of a polynomial with more than 4 elements, so (ax^3 + bx^2 + cx + d).

To Reproduce
Steps to reproduce the behavior:

1. Use the function on a polynomial with more than 4 coefficients/numbers (t.polynomial(1, 6, -8, -6))

Expected behavior
The roots should be gotten.

Screenshots / Output
the output is simply undefined or an empty array

NodeJS (please complete the following information):

• OS: [e.g. macOS 10.14] Linux ( Ubuntu 20.04 )
• Node version [e.g. v8.11.3] Node 18
• Version [e.g. v1.0] latest (1.2.0)