So i tried to read online explanations but it's hard to understand, is anybody willing to elaborate on this formula that I vaguely understand?

\[\color[rgb]{0.11,0.21,0.37}\frac{a_1+a_2+\cdot +a_n}{n} \ge \!\sqrt[n]{a_1a_2\cdots a_n}.\]

Guest Jan 27, 2021