Don_quixote, that is incorrect. Please remember that you must state at the beginning of your response that you are not a teacher. "Talk to" certainly does not only mean to give a speech to an audience. It means to converse. A speech to an audience usually uses "address".
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You can use either ( 1.I talk to him. 2.I talk with him.) but sentence 1 is a bit more common. You usually say talk to or speak with, or you can use talk as a noun and say: I'll have a talk with Emma.