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secondary 3 | A Maths
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Kyra leow
Kyra Leow

secondary 3 chevron_right A Maths chevron_right Singapore

How do I solve this?

Date Posted: 4 months ago
Views: 20

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Eric Nicholas K
Eric Nicholas K's answer
3789 answers (Tutor Details)
1st
I pick out combinations for x2 so that I do not need to expand and write many terms.
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Marcus Neale Goh Zheng Jie
Marcus Neale Goh Zheng Jie's answer
7 answers (Tutor Details)
**An alternative to using the binomial expansion is to recall the Maclaurin expansion which will involve repeated derivation (power rule). I hope the solution is helpful and makes sense. Feel free to clarify is I was not clear or if I made an error.
Eric Nicholas K
Eric Nicholas K
4 months ago
The “repeated derivation” part is not in the O Level syllabus for A Maths.