1. 28. (AM) Binomial Part 2Last week, we continued to learn more about Binomial Theorem. Since we learnt that there is a pattern in the binomial expansion, we can use general term formula to focus on one term without expanding everything! Sometimes, either n, a, or b are unknowns (other than x) and it starts to get more complicated. We found that nCr has some formula to it and it’s not some kind of magic. We learnt how to rewrite the “choose” function into algebraic expression and use it to solve these unknowns.