Question 131
Prove that every positive real number satisfies
$$
(x+1)(x+2)(x+5) \ge 36x.
$$
$$
(x+1)(x+2)(x+5) \ge 36x.
$$
MathNet 2018-part-02 — 181 problems (EN–VI) Question 131
Math Olympiad Vault · MathNet 2018-part-02 — 181 problems (EN–VI)
Math Olympiad Vault · MathNet 2018-part-02 — 181 problems (EN–VI)