not sure how to do (a) (b) and (c) i know the answer for (a) but not sure why e

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secondary 4 | E Maths
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secondary 4 E Maths Singapore

not sure how to do (a) (b) and (c)
i know the answer for (a) but not sure why either

Date Posted: 4 years ago

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Date Posted: 4 years ago