Mathaddict100's answer to Kathy's Secondary 4 A Maths Singapore question.
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I hope this is correct..I can only think of 'complete the square' method besides factorisation and I can see that it is quite possible to do so..
Date Posted:
5 years ago
Hi, Mathaddict100, I respectfully disagree with your answer for Q13, because you have to take the expansion of (1-1/(2x))^2 into account.
Also, the 'hence' part means you have to use your expansion of (1+x+x2)^10 in solving the 2nd part. See my answer below for details.
Also, the 'hence' part means you have to use your expansion of (1+x+x2)^10 in solving the 2nd part. See my answer below for details.
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