Had a root canal on molar 6 months ago, no crown. was eating and some of the tooth broke. will an extraction hurt less since the roots should be gone?

Molar extraction: Maybe maybe not. The physical experience of extraction is unlikely to be diminished due to a prior root canal. Despite the break of the tooth, you can still opt for a crown on that molar. Discuss with your dentist and try to preserve teeth as it helps prevent atrophy of mandible and maxilla.

Need evaluation: Need to get into a dentist and have tooth x-rays and an evaluation. The dentist should provide you with options. If in doubt, get a second opinion.