Complex sentence: At the trial, it is undisputed that Tom came to Mayella's home at her request to assist with the chopping up of a chifforobe, and that Mayella showed signs of having been beaten around that time.
Split into simpler sentences: At the trial, it is undisputed that Tom came to Mayella's home, at her request, to assist her with chopping up a chifforobe. It is also undisputed that Mayella showed signs of having been beaten around that time.