Kenneth Chee's answer to Elis's International Baccalaureatte Maths HL Singapore question.

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Kenneth Chee
Kenneth Chee's answer
179 answers (A Helpful Person)
1st
Elis
Elis
5 years ago
thank you!
Elis
Elis
5 years ago
why does 5n become 5n^2 in the second step?