1.9 EDO de Segunda Ordem com Coeficientes Constantes (parte IV) - Raízes iguais.

Round-13 hunt: picked; source: named-course long-video search (round-12 queries, single-hit channels, second prefilter); channel screens (sellers/exam/re-upload/devotional/vendor/events), provenance check, vendor/seller/devotional recheck and quality tier C + tier-C depth check passed; strict per-title check + final strict pass; oEmbed verified.

A 9-minute video from LESMA: “1.9 EDO de Segunda Ordem com Coeficientes Constantes (parte IV) - Raízes iguais.”.

Video by LESMA, played through YouTube's embedded player.