i dont understand how to answer this question. my answer is wrong from the answe

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secondary 3 | A Maths
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secondary 3 A Maths Singapore

i dont understand how to answer this question. my answer is wrong from the answer key and i dont understand why.

Date Posted: 2 years ago

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Hope this helps :)

Date Posted: 2 years ago

Geraldine L

2 years ago

thank you!