Eric Nicholas K's answer to Shams's Secondary 3 A Maths Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
This is an idea.

Well, you could expand the brackets fully and find the specific term...

...but imagine the power gets large. This is why we just pick a specific term in the general expansion rather than expanding out everything fully. It’s going to be a long expansion.
Shams
Shams
3 years ago
Thx alot
Shams
Shams
3 years ago
Thx