Watch & download (a+b+c)^3 formula MP4 and MP3 now. You can download free mp3 or MP4 as a separate song, or as video and download a music collection from any artist, which of course will save you a lot of time.
My blog post for this video. I'm thinking of a three digit number where the exactly equals sum factorial each digit. This was a question from the 2006 australian mathematics competition senior division (for students around 17 years old) and only 1% got it right.
Related example to square trinomial. Learn how to expand and simplify 3 brackets using the expansion formula for example (x+a)(x+b)(x+c).