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Mathematics, 20.12.2020 14:00 angel41vgg

Given Sn=2n^2 - 5n, find (a) first term
(b) 9th term
(c) sum of the terms from the 4th term to the 8th term

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Given Sn=2n^2 - 5n, find (a) first term
(b) 9th term
(c) sum of the terms from the 4th...
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