Eric Nicholas K's answer to Irah Athirah's Secondary 3 A Maths Singapore question.
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Here is the explanation for 4ii. I have to say that this topic is not easy to grasp unless you have a strong understanding of how the terms within the expansions work. A lot of people struggle with this topic because there is a lot of work to do in this topic even though there is only one formula to memorise for this chapter.
Date Posted:
5 years ago
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