researched
v.v. to study a subject in detail to find new information or facts. You do this when you want to understand something better or prove a point.
v. to investigate systematically to establish facts or reach new conclusions. Transitive — requires a direct object representing the subject of inquiry.
She researched the history of her family for years.
The marketing team researched consumer trends for months before launching the new product line.
The scientists researched the long-term effects of the chemical on local wildlife, eventually publishing their findings in a peer-reviewed journal.
The verb is transitive and takes a direct object; it is often followed by 'into' when used as a noun, but as a verb, it directly precedes the topic.
I researched about the topicI researched the topicThe verb 'research' is transitive and does not require the preposition 'about'.