In Sec 1, we learn FOUR methods to factorise algebraic expressions:
- by Identifying the Highest Common Factor (HCF)
- by Grouping
- by Algebraic Identities (Special Products)
- by "Cross Method"/ "Shoe-lace" Method
What you need to do:
- Watch the following video clips to learn the techniques.
- You may "break up" the series of video clips into smaller segments.
- Get ready with your writing materials and your Maths notebook (to pen down the question).
- The video may pause half-way to allow you attempt the question on your own before viewing how the expression could be factorised.
- What are the key things to look out for (in the given expression) for each method described?
- Is there any "pattern" in the expression that gives you an idea which method to use?
- When would you use each of this method? What are the deciding factors for your choice?
Method 1: By identifying the Highest Common Factor
Method 2: By Grouping
Method 3: By Special Products / Algebraic Identities
Method 4: Cross Method