This math topic focuses on simplifying algebraic expressions involving the difference of squares. Specifically, students practice dividing terms where variables are squared and then subtracted from each other, by another term that is a linear combination of those variables. Students must identify the simplified form of expressions such as \(\frac{d^2 - z^2}{d + z}\). They are given multiple choice options to select from, fostering their ability to recognize and apply the formula for the difference of squares. This is an advanced aspect of studying polynomials and quadratics.