find the value of a2 + b2 + c2
https://www.youtube.com/watch?v=XOO6V2GaFkQ,https://www.youtube.com/watch?v=PrtI9BzGVmM,What is the formula of AB BC CA?,What is a Square B Square C Square?
https://www.youtube.com/watch?v=XOO6V2GaFkQ,https://www.youtube.com/watch?v=PrtI9BzGVmM,What is the formula of AB BC CA?,What is a Square B Square C Square?