- $\rhd$ Intro to the binomial theorem (13:14) A formula for $(a+b)^n$. What is $(a+b)^4$?
- $\rhd$ Pascal’s triangle and the binomial expansion (8:19) Find $(a+b)^4$ using Pasdcal’s triangle.
- $\rhd$ Expanding binomials (8:40) Expand $(3y^2+6x^3)^5$.
- * Practice Expand binomials. (4 problems)