Quadratic Residue (Part-1) Solution of Quadratic Congruence

This video is about Solution of Quadratic Congruence using another particular type of Quadratic Congruence, involving a linear congruence. This is the first lecture to understand the ethos behind Quadratic Reciprocity Law. The aim is to solve quadratic congruence. Here I have discussed the case with prime moduli.

[msc_durgadevi]

Mam, here d value I got like this a=5, b=-6, c=2{d=36-4*5*2,
36-40=-4} why you put 9, i have a doubt, pls explain me mam

[justin_sinaga]

i dont understand where does the 12 come from at the final answer

[narasimhaswamy]

in 7:19 how if x0 is the solution of x^2=a(mod p) then the other solution is p - x0? Can we prove it?

[aliazhar]

Wah rana g so proud of you but plz in urdu language