Least Residue of a Quadratic Congruence Mod 21

Published: 19 October 2023
on channel: sumchief

443

This video discusses how to solve a system of quadratic congruences for the variable x .
The question is x^2+7x-12=3 for modulus 21
We first solve mod 3 then mod 7
Then we find 4 solutions using the Chinese Remainder Theorem
This is a topic in Number Theory

• Hensel's Lemma lifting the powers to ...
• Solve a Quadratic Congruence Equation

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