<s>[INST] I am taking a Calculus course and I was wondering if you could help me with a problem, that being 1(x-1)^4, I am having trouble understanding the concept of expanding a binomial raised to a power using the binomial theorem. The binomial theorem states that (a+b)^n = ∑[nCk*(a^(n-k))*(b^k)], but I am having trouble applying this concept to this problem. Could you help explain this concept and walk me through it?[/INST]