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6 May, 16:03

Find the first, fourth, and eight terms of the sequence. a (n) = - 2x5^n-1

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  1. 6 May, 16:51
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    First term = 2 x 5 (1-1) = 2 x 1 = 2

    4th term = 2 x 5^3 = 250

    8th term = 2 x 5^7 = 156,250
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