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Math Help - adding Log question

  1. #1
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    adding Log question

    log (x+5)+log (x+29)=4
    3 3



    the 3's are subscripts to log
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  2. #2
    Master Of Puppets
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     \log_3 (x+5)+\log_3 (x+29)=4

    Consider

     \log_ab+\log_ac=\log_a(b\times c)

    So

     \log_3 ((x+5)(x+29))=4

    Raise both sides to the power of 3 gives

     (x+5)(x+29)=3^4

    now you have to solve the quadratic. All good?
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