Quadratic Residue (Part-7) Legendre Symbol (2/p)

This video is about Legendre Symbol(2/p). Here I show (2/p)=1 if p is an odd prime of the form 8k+1 or 8k+7; and (2/p)= -1, if p is an odd prime of the form 8k+3 or 8k+5.

Link to: 
Quadratic Residue(Part-1): https://youtu.be/ped6r2UFk78
Quadratic Residue(Part-2): https://youtu.be/6Q7-SB_U8EM
Quadratic Residue(Part-3): https://youtu.be/W52rVkuJUII
Quadratic Residue(Part-4): https://youtu.be/jQ1j_N53C6w
Quadratic Residue(Part-5): https://youtu.be/GUEZkJ4pJ1U
Quadratic Residue(Part-6): https://youtu.be/2-ZiJVWb-yY