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janet2009

  • 3 years ago

log(x)+log(x+2)=2

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  1. myininaya
    • 3 years ago
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    log(a)+log(b)=log(ab)

  2. janet2009
    • 3 years ago
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    is there any way you can help me solve the problem?

  3. myininaya
    • 3 years ago
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    Yep. I just gave you a hint. Use that hint on the left hand side.

  4. janet2009
    • 3 years ago
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    so I tried using that formula but the answer is a huge number.

  5. myininaya
    • 3 years ago
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    So you did log(x(x+2))=2 because that is what I asked you to do.

  6. myininaya
    • 3 years ago
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    Then base 10 on both sides so you can undo that log on that one side.

  7. myininaya
    • 3 years ago
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    \[10^{\log(x(x+2))}=10^2 \]

  8. janet2009
    • 3 years ago
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    yes i did that and from there I get X^2+2x=10^2 which becomes x^2+2x-100?

  9. myininaya
    • 3 years ago
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    Solve for x and see if both solutions will work.

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