Go to Settings on your iPad > Tap on General > Scroll down and choose Reset > Tap Erase All Content and Settings option.
Delete your message history
To delete a conversation:
All you have to do is give the iPhone a shake while the app is still open and the iPhone prompts you to undo the mistake. While the prompt button says "Undo Typing," this button works for accidental deletions, cuts or any other editing you last did in the app.
To access Recently Deleted notes, open your Notes app, and tap "Recently Deleted" from your list of folders. See a note you wish to recover? Tap Edit > select the notes you want to recover > Tap "Move To" > Select a folder to restore the notes to. Phew, your notes are now safe in an active Notes folder!
Click Albums, then select the Recently Deleted album to view its contents. Click Select Photos, then do one of the following: Click Recover All. Select the photos or videos you want to recover, then click Recover.
If the last thing you did in the Finder was to delete a file or files (drag to Trash or select and then File > Empty Trash or Command-Delete), you can select Edit > Undo Move (Command-Z) and the items return to their previous positions.
Delete a message or conversation
What to Know
To delete a conversation:
You can also perform an undo action by swiping your iPhone's screen. To do it, place three fingers on the screen and swipe quickly to the left. You'll see an “Undo” message pop up near the top of your screen, and the last action will be undone.
All replies. Deleting the thread or conversation just deletes it from your message app. Once someone respond to the text it'll pop up again. Leave the conversation means you're leaving the group thread and won't get anymore message from that group.
If you want to delete multiple messages at the same time, hold down the Command key and select the items. Then, control-click or right-click any of the highlighted messages and select Delete.
There is no way to recover them. Notes does not have an undo feature and you have no previous backup to restore from.
If you just deleted the note, a Shake to Undo will bring up an Undo Trash Note option. Tap Undo to recover your note. Otherwise, navigate to the main Folders menu in Notes. Tap Recently Deleted to access deleted notes.
The answer to your actual question is unquestionably NO. It will remain visible on another synced device until deleted from that device, and it may remain searchable via spotlight even after that.