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12 January, 05:41

Solve this equation

2^ (x+3) = 512

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Answers (2)
  1. 12 January, 05:43
    0
    2^ (x + 3) = 512

    ln (2^ (x + 3)) = ln (512)

    (x + 3) ln (2) = ln (512)

    ln (2) ln (2)

    (x + 3) ln (2) = ln (2^9)

    ln (2) ln (2)

    (x + 3) ln (2) = 9ln (2)

    ln (2) ln (2)

    x + 3 = 9

    - 3 - 3

    x = 6
  2. 12 January, 06:02
    0
    X=1, the equation=16; x=2, the equation=32; by such analogy, when x=6, the equation=512. so the answer is x=6.
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