# Quadratic Residue

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Let p be an odd prime and b be a quadratic residue of p.

For p=19 for which pÃ¢?Â¡3 (mod 4), show by direct calculation that the pairs 1 and 18, 2 and 17, 3 and 16, and so on, have one quadratic residue and one quadratic nonresidue.

https://brainmass.com/math/algebra/quadratic-residue-question-376574

#### Solution Preview

QR: Quadratic residue

QNR: Quadratic nonresidue

QNR ...

#### Solution Summary

Quadratic Residue is contextualized.

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