a) For an odd prime p, prove that the quadratic residues of p are congruent mod p to the integers 1^(2),2^(2),3^(2), ....., ((p-1)/2)^(2).                                                                                                                                                              b) Verify that the quadratic residue of 17 is 1,2,4,8,9,13,15,16. I need the proof handwritten.

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