What is more correct:

The slide i showed earlier

The slide I’ve shown earlier

• “I’ve shown” (I have shown) is the present perfect tense, which is used for actions that have relevance to the present moment. Since you’re referring to a slide you showed earlier and it is still relevant to the discussion, this is the better choice.

◦ “I showed” (past simple) would be more appropriate if you were referring to a completed action in a specific past timeframe (e.g., “The slide / showed yesterday”). However, without a specific time mentioned, present perfect is preferable.