2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/72202We derive several symmetric identities for Bernoulli and Euler polynomials which imply some known identities. Our proofs depend on the new technique developed in part I and some identities obtained in [European J. Combin. 24(2003), 709--718].10 pages; (3) has a new form, Lemma 2 is addedNumber TheoryCombinatorics11B68; 05A19New identities involving Bernoulli and Euler polynomials. IItext