Previously I mentioned that distribution and factoring would be prominent in your work in algebra. And we often practice this distribution and factoring with polynomial expressions. Polynomials are the amazing workhorses of algebra--they are incredibly versatile and they show up everywhere. It's important to identify them correctly, know their parts, and be able to simplify them.
The first few problems in EE3 involve just identifying polynomials correctly and understanding their parts. Here's a video from Khan:
Parts of Polynomials
And some practice multiplying a binomial by a monomial: