Split screen on my iPad

Split view or slide over?

If split view: Slide the grey bar to the left fully or the right fully

If slide over: Drag the slide over to the right fully

How? Hold the small rectangle on top of the slide over and drag.

Or: Press the home button

To permanently remove it, go to Settings > General > Multitasking and Dock > Turn “Multitasking” Off.

Simply drag the grey handle, located in the centre of the divider, off of one or other side of the screen.

You may find these overview Apple video guides to be helpful:

After viewing, you’ll be ready for the additional Multitasking Guide:

Use Multitasking on your iPad - Apple Support

The iPad User Guide for iPadOS is also a rich source of information. Here are links to both the downloadable and online versions of the Guide:

‎iPad User Guide on Apple Books

iPad User Guide - Apple Support

I hope this explanation and additional information is helpful in resolving any difficulties you may be having with Multitasking features of your iPad.