Question 21
Let $p$ be a prime number. Determine all pairs $(a, b)$ of integers such that
$$
p(a - 2) = a(b - 1).
$$
$$
p(a - 2) = a(b - 1).
$$
MathNet 2017-part-02 — 176 problems (EN–VI) Question 21
Math Olympiad Vault · MathNet 2017-part-02 — 176 problems (EN–VI)