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23 January, 00:22

Solve. Check for extraneous solutions.

1. In (4x + 1) = ln (2x + 5)

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  1. 23 January, 00:23
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    The answer is x = 2. No extraneous solutions.

    Step-by-step explanation:

    Raise both sides to the eth power:

    4x + 1 = 2x + 5

    2x + 1 = 5

    2x = 4

    x = 2

    We plug this in:

    ln (4 (2) + 1) = ln (8 + 1) = ln (9)

    ln (2 (2) + 5) = ln (4 + 5) = ln (9)
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