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MathNet 2026 — Part 06 Question 164

Math Olympiad Vault · MathNet 2026 — Part 06

Question 164

There are real numbers $\alpha$, $\beta$, such that the cubic functions
$$
f(x) = x^3 - 3x^2 + \alpha x + \beta \quad \text{and}
$$
$$
g(x) = x^3 + (\alpha - 3)x - 6
$$
have exactly two distinct non-zero roots in common. Find $\alpha$ and $\beta$.