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Omni-MATH / Let S be the set of all ordered triples (p,q,r) of prime numbers for which at least one rational number x satisfies px²+qx+r=0. Which primes appear in seven or more elements of S? · Discussion

Discussing Let S be the set of all ordered triples (p,q,r) of prime numbers for which at least one rational number x satisfies px²+qx+r=0. Which primes appear in seven or more elements of S? · Omni-MATH

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