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MathNet 2026 — Part 05 Question 96

Math Olympiad Vault · MathNet 2026 — Part 05

Question 96

Suppose $u, v$ are distinct roots of the cubic polynomial
$$
p(z) = z^3 - 5z^2 + 6z - 1.
$$
Prove that $u, v$, and $u/v$ are positive irrational real numbers.