a. The first five terms of n^2 + 5 are

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a. The first five terms of n^2 + 5 are

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niczorrrr 4 years 2021-07-31T18:28:12+00:00 1 Answers 11 views 0

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  1. haidang
    0
    2021-07-31T18:29:12+00:00
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    Given:

    The nth term of a sequence is:

    n^2+5

    To find:

    The first five terms of the given sequence.

    Solution:

    The given sequence is:

    a_n=n^2+5

    For n=1,

    a_1=1^2+5

    a_1=1+5

    a_1=6

    For n=2,

    a_2=2^2+5

    a_2=4+5

    a_2=9

    For n=3,

    a_3=3^2+5

    a_3=9+5

    a_3=14

    For n=4,

    a_4=4^2+5

    a_4=16+5

    a_4=21

    For n=5,

    a_5=5^2+5

    a_5=25+5

    a_5=30

    Therefore, the first five terms of the given sequence are 6, 9, 14, 21, 30.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )