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?
\[\color[rgb]{0.11,0.21,0.37}\frac{a_1+a_2+\cdot +a_n}{n} \ge \!\sqrt[n]{a_1a_2\cdots a_n}.\]
Here's a simple explanation for a specific value of n that might help before you try to understand a more general proof.
I forgot this but I remember the website I used to learn it.
Here it is: https://web.williams.edu/Mathematics/sjmiller/public_html/OSUClasses/487/ArithMeanGeoMean.pdf
It's a great notes sheet.
