trig

log(x-15)-2=-logx

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  1. Log(x-15)-2 = -Logx.

    Log(x-15) + Logx = 2,
    Log((x-15)x) = 2,
    Exponential form:
    (x-15)x = 10^2,
    x^2 - 15x = 100,
    x^2 - 15 -100 = 0,
    (x+5)(x-20) = 0,

    x+5 = 0,
    X = -5.

    x-20 = 0,
    X = 20.

    Solution set: X = -5, and X = 20.

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