**Question**

**Introduction**

This is a
question on

*factorisation*(Am:*factoring*). The key to doing this is*chunking*. Can you see any chunk (maybe hidden) that is being repeated? Take this out as the common factor and simplify. Remember the square-of-differenceidentity (*a*–*b*)^{2}=*a*^{2}– 2*ab*+*b*^{2}.**Solution**

**Summary**

As in this question, chunking is a very
powerful tactic. When you attempt to
solve mathematics problems, open your eyes wide!

H04. Look for
pattern(s)

H10. Simplify
the problem

H11. Solve part
of the problem

H13* Use
Equation / write a Mathematical Sentence

**Suitable Levels**

*****Lower Secondary Mathematics (usually secondary 2 ~ grade 8 approx.)

* other syllabuses that involve algebraic
factorisation and expansion

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