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MathNet 2010 — Part 01 Question 80

Math Olympiad Vault · MathNet 2010 — Part 01

Question 80

Prove that
$$
\frac{a^2}{a+b} + \frac{b^2}{b+c} \ge \frac{3a+2b-c}{4}
$$
for all positive real $a, b, c$.

(D. Pirshtuk)