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5 January, 02:28

Find the 12th term of the geometric sequence 2, - 8,32, ...

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Answers (2)
  1. 5 January, 02:31
    0
    Step-by-step explanation:

    hello:

    the n-ieme term is : An=A1*r^ (n-1)

    A1 the first term r : the common ratio

    in this exercice : A1 = 2 r = 32/-8=-8/2 = - 4 n = 12

    A12=2 * (-4) ^ (12-1) = - 2*4^11 because : ((-4) ^ (11) = - 4^11
  2. 5 January, 02:52
    0
    -8388607

    Step-by-step explanation:

    a = 2

    r = - 8/2 = - 4

    12th term = (2) * (-4) ¹¹

    = - 8388608
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