Xavier Sng's answer to mary's Secondary 3 A Maths Singapore question.
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Hope this helps. Regards
Date Posted:
10 months ago
Thank you
May i check if this qn can be solved using a³-b³ method? Im not sure how to use for this qn
My pleasure. To your question, yes you can. I would however use binomial expansion or the pascal triangle to crack this because it does not, in my humble opinion, worth the effort to memorise the formula for a^3 - b^3. Regards
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