This video presents an approach or approaches to the QCE Mathematical Methods Sample 2020 Paper 2, Questions 18 to 20. These approaches incorporate the use of a Casio fx-CG50 AU as well as ‘by hand’ solution methods. At times, two alternative methods are presented. The providing of two solutions is intended to encourage a conversation between teachers and students about the most discerning and efficient way to tackle the mathematics presented in this form of assessment.