Deriving the Quadratic Formula (Proof Video)

[@nekotori7043]

Thank you Iron Man!

[@QuocDatPhung]

Thanks for your kind words! Please kindly subscribe and share with your classmates, it means so much!

[@maysounhejazy7056]

Amazing🎉🎉🎉❤

[@maysounhejazy7056]

Can I ask about the graphic tablet and the app which you use

[@QuocDatPhung]

@@maysounhejazy7056 I use the Wacom Tablet. For editing, I use Shotcut. For filming, I use OBS and my phone. For writing on the screen, I use Sketcbook. All of these apps are free.

[@maysounhejazy7056]

@@QuocDatPhung thank you for your response