If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Course: Algebra (all content) > Unit 10

Lesson 26: Understanding the binomial theorem
Math
Algebra (all content)
Polynomial expressions, equations, & functions
Understanding the binomial theorem
© 2024 Khan AcademyTerms of usePrivacy PolicyCookie Notice

Binomial expansion & combinatorics

Google Classroom
Sal explains why we use the combinatorial formula for (n choose k) to expand binomial expressions. Created by Sal Khan.

Want to join the conversation?

Log in
No posts yet.
Do you understand English? Click here to see more discussion happening on Khan Academy's English site.

Video transcript