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MathNet 2019-part-02 — 184 problems (EN–VI) Question 96

Math Olympiad Vault · MathNet 2019-part-02 — 184 problems (EN–VI)

Question 96

Let $a$ and $b$ be positive real numbers such that
$$
\frac{a}{b} + \frac{b}{a} = 3 \quad \text{and} \quad \frac{a^2}{b} + \frac{b^2}{a} = 10.
$$
Determine $\frac{1}{a} + \frac{1}{b}$.
(Kristina Ana Škreb)