Eric Nicholas K's answer to chocolatebanana's Secondary 4 A Maths Singapore question.
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The workings are quite a mess. Substitution in the indices question and simplification + rationalisation of surds in the surds question are needed.
Date Posted:
4 years ago
thankyou!! i will try understanding!!
For part a we are limited to using that formula, so using substitution will be wise here.
For part b you can rationalise immediately, but then the number gets very big.
For part b you can rationalise immediately, but then the number gets very big.
okay sure thankyou so much!
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