Pls help me check if I did a correctly and help me with question b thx

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secondary 4 | A Maths
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secondary 4 A Maths Singapore

Pls help me check if I did a correctly and help me with question b thx

Date Posted: 1 year ago

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Date Posted: 1 year ago