[Group Discussion] Factorisation Pyramid Challenge

This was carried out during lesson in the week before National Day (approx 30min).

The challenge is to recognise "characteristics" of the given expression and apply the appropriate factorisation method(s) to factorise the expression completely.

On the whole: 

• Group A 3 points
• Group B 10 points
• Group C 13 points 👏 🏆
• Group D 11 points 
• Group E 12 points 
• Group F 12 points 
• Group G 9 points
• Group H 13 points 👏 🏆

Here's the suggested solution: