NOTE: ROOTING MAY NOT WORK ON LATEST BUILD OF REMIX OS WHICH IS OFFICIALLY RELEASED BY TECLAST
Steps for Rooting
Step 1 – Download & install iRoot
Tools you need to root is iRoot, this tool work so well so far for this tablet. download the tool from here and install it.
Step 2 – Enable USB debugging on Tablet
Go to your tablet Settings>>About tablet>> tap on build number several times to enable developer options in tablet settings, Once developers settings enables check USB debugging.
Step 3 – Connect USB cable and run iRoot
After enable USB debugging on Tablet. You just need to run iRoot software and connect tablet to computer. iRoot will begin with rooting process.
It will give option of Re-root after some process hit that. and your tablet will shutdown, Reboot tablet in android again, and you will see Root success message on iRoot application.
Step 4 – Verify Root & Enjoy
Check for super user application on tablet. if you find then congratulations your tablet is rooted now. For further verification. Just download any root verification app and check root.
Learn how to to install/fix playstore in remixOS here:
http://31.14.138.65/2015/08/installfix-playstore-remixos-teclast-x98-air-air/