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MathNet 2015-part-04 — 191 problems (EN–VI) Question 106

Math Olympiad Vault · MathNet 2015-part-04 — 191 problems (EN–VI)

Question 106

Let $a$, $b$, $c$ be positive real numbers such that $a + b + c = 3$. Determine the minimum value of the expression
$$
A = \frac{2 - a^{3}}{a} + \frac{2 - b^{3}}{b} + \frac{2 - c^{3}}{c}
$$