This math topic focuses on practicing algebraic functions, specifically multiplying bracketed terms containing different variables. Students are required to expand expressions where each bracket contains distinct variables and constants. For example, they expand and simplify expressions like \((b+2)(n+7)\), identifying equivalent terms in the expanded form. Each problem presents an expression to expand, followed by multiple choice answers where students must select the correctly expanded and simplified expression. This set of problems is valuable for developing skills in algebraic manipulation and understanding the distribution of terms within binomials.