Ong Jing Long's answer to :^)'s Secondary 1 Maths Singapore question.
There is a slight inaccuracy in the expansion of one of the brackets in biii. It’s 12x instead of 4x.
Final answer for part biii should be 8x + 8, which can be factorised into 8 (x + 1) for use in part iv.
Final answer for part biii should be 8x + 8, which can be factorised into 8 (x + 1) for use in part iv.
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