only part (b) needed! answer is (n/3)(28n^2 -1) but i'm not sure how to get to t

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junior college 1 H2 Maths

only part (b) needed! answer is (n/3)(28n^2 -1) but i'm not sure how to get to there. thanks!

Date Posted: 6 years ago

done {{ upvoteCount }} Upvotes

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Expand the square term before simplifying

Date Posted: 6 years ago

Stephanie

6 years ago

thank you for clarifying!