الجواب وبالله التوفيق
Fuqaha(i.e. Islamic Scholars specializing in Fiqh) have considered the term “You are free from me” as a Sareeh(i.e. clear) statement to issue Divorce. By saying these words even without an intention to issue divorce, one Talaq-e-Raj‘ai(i.e. a revocable divorce) has taken place.
In order to take the wife back, any actions such as the husband and wife having a physical relation or expressing affection, or the husband simply saying “I take you back as my wife”, will be sufficient. Moving forward the husband has a chance to issue only 2 divorces.