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secondary 4 | A Maths
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secondary 4 chevron_right A Maths chevron_right Singapore

Hi i need help with (ii)! The ans is -2 . Tks!

Date Posted: 4 years ago
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Enrico Tan
Enrico Tan's answer
2 answers (A Helpful Person)
1st
Take note to include +... at the end of the expansion for part i, if not, your answer might be right, but your presentation is not. Also, you might not have gotten the answer due to carelessness in replacing p as 8 instead of 1/8.