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algebra

posted by on .

1. logx+log(x+48)=2

14.log50+log(x/2)=2

23.log72-log(2x/3)=0

Could someone please explain to me how to solve these?

  • algebra - ,

    1
    32
    58

  • algebra - ,

    thanks, but how do i solve them?

  • algebra - ,

    remember the rule of logs?

    Log (ab)= loga + logb so, take 14 as an example:

    log50 + log(x/2)=2
    log(50x/2)=2
    50x/2= antilog2
    solve for x

    On 23, the formula is

    log(a/b)= loga - logb

  • algebra - ,

    thanks!

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