I am trying to make a simple generic "tab" shape where the two top corners are rounded but the bottom two corners are not (as shown below). I've tried a dozen ChatGPT suggestions and they all fail. Can anyone show me how this is done?

I tried overlaying one regular rect with no rounding, above and to the bottom of one with rounder corners, but cant' erase the unneeded line in the group?
Anyone know how to do this properly?