Neo Yu Shan's answer to Leroy's Secondary 3 A Maths Singapore question.
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hope this helps
Date Posted:
5 years ago
Hi I have not learnt how to use the ∑ method to solve my problems. Is there another method? Thanks for the first solution though
the summation is actually a general term for any binomial expansion. it’s just a short hand form for writing out the terms as i have posted in the second photo.
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