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junior college 1 | H1 Maths
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Jia Yun
Jia Yun

junior college 1 chevron_right H1 Maths chevron_right Singapore

can anyone explain the 3rd line

Date Posted: 3 years ago
Views: 270
John Wee
John Wee
3 years ago
There is probably a result you proved earlier that reduced the sum to 2 terms

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kagamihara-chan
Kagamihara-chan's answer
92 answers (A Helpful Person)
Please double check :D
Jia Yun
Jia Yun
3 years ago
thank you!! : )