Question 7
Determine all $(a, b)$ pairs of positive integers for which
$$
\frac{a^2 b + b}{ab^2 + 9}
$$
is an integer.
$$
\frac{a^2 b + b}{ab^2 + 9}
$$
is an integer.
MathNet 2002 — Part 01 Question 7
Math Olympiad Vault · MathNet 2002 — Part 01
Math Olympiad Vault · MathNet 2002 — Part 01