Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2016-part-05 — 184 problems (EN–VI) Question 88

Math Olympiad Vault · MathNet 2016-part-05 — 184 problems (EN–VI)

Question 88

Determine all pairs of real numbers $a$ and $b$, which satisfy the inequality
$$
a^{2}(2a - b) + b^{2}(2b - a) \geq 0.
$$