Exam Prep 9: Geometric sums and the binomial theorem

0:00 Introduction 1:02 Theory: the two formulas 2:30 Theory: the recipes 3:15 Example: exam 2018 Q4 6:02 Example: exam 2022 Q2a 7:13 Example: exam 2023 Q5b 8:23 Exercise: exam 2023 Q8a 9:55 Recap