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A Bluetooth receiver and any compatible phone charger plug to power your tablet.
Examples of bt receivers
https://www.tp-link.com/us/home-networking/bluetooth-reciever/ha100/
https://www.logitech.com/en-us/products/speakers/bluetooth-audio-adapter.980-000910.html
You don't need to match the ohm number.
Any reasonable amp will drive both of those speakers.
I'd ignore Bluetooth and USB, they will change in time and a decent amp should work for 20 years.