Question

(x^3-y^2)^13 find the x^18th term

Answer 1

Definitely a problem where working smarter is better!

Answer 2

Use the binomial theorem:

\[(a+b)^n = a^n + na^{n-1}b + \frac{n(n-1)}{2}a^{n-2}b^2 + ... + b^n\]

Answer 3

Alright let me give this a try

Answer 4

What did you get?