(February 18, 2022 at 3:57 am)FlatAssembler Wrote:(February 16, 2022 at 10:28 am)polymath257 Wrote: By the way, it looks like this equation has two negative real roots and two complex roots. One of the real roots is approximately -5.471 and the other is approximately -3.678. I haven't searched for the complex roots.
How did you figure it out?
Graphing the function and seeing where it crosses the axis. You can tell from the coefficients that all real roots are negative. The roots are irrational, so the best approach, unless you are doing algebraic number theory, is to use approximations.