In Amath, finding the general term in binomial expansion is easy, because we can easily evaluate nCr. However, finding the general term in H2 math can be much more challenging because n can be a fraction or negative integer.
These type of questions have appeared in JC assignments. Fortunately, it has not appeared in A level exam for the past 10 years. Nevertheless, it is still good to learn how to derive the general term 🙂