Arnold K H Tan's answer to Ricky's Secondary 3 A Maths Singapore question.
Thanks
Yr worked solution differs from given answer. Given answer is (i) 1.5(7x3^1.5 + 12). & (ii) 2x3^1.5 - 1
It’s just a slight error in Arnold’s workings for part i, where 4 + 2 sqrt 3 + 2 sqrt 3 + 3 will actually become 7 + 4 sqrt 3.
Workings are otherwise good.
Workings are otherwise good.
Whoops.. thnx for the vetting and comments.
Happy new year!
Happy new year!
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