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22 June, 05:58

If Sn = 3n^2 - 5n, determine the value of t18.

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  1. 22 June, 06:16
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    Answer: 882

    Step-by-step explanation:

    S (n) = 3n² - 5n

    S (18) = 3 (18) ² - 5 (18)

    = 3 (324) - 90

    = 972 - 90

    = 882
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