need help with this qn,, pls explain too :)

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secondary 3 A Maths Singapore

need help with this qn,, pls explain too :)

Date Posted: 4 years ago

CH Wong

4 years ago

This is a question related to binomial expansion. Hint: Use the formula Tr+1=nCr a^(n-r) b^r.

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Hope this helps!

Date Posted: 4 years ago