In this video I answer a student's question on how to factorise a polynomial using the difference of two squares. If you have ...
This video is the answer I provided a student for their question they submitted online Timestamps: 0:00 Intro 0:40 Start of ...
As a ninth-grader, Shanghai's Li Sixin spent more than three hours on homework a night and took tutorials in math, physics and chemistry on the weekends. When she was tapped to take an exam last year ...