1. I am still struggling with the concept of multiplicative inverses, what a field is, or what a unit is. All I know about mulitiplicative inverses is that if you multiply a number by its multiplicative inverse, you get 1. However, I am not quite sure how to find what that multiplicative inverse is.
2. I thought the first few pages of the section were very logical. It applied directly to basic arithmetic properties, so it was easy to understand. One thing that did not hold for basic arithmetic properties was that (a+b)^2 did not always equal a^2 + 2ab + b^2. I understand this because I understand 3.1 pretty well.
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