Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

janet2009

  • 2 years ago

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

  • This Question is Open
  1. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    log(a)+log(b)=log(ab)

  2. janet2009
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    is there any way you can help me solve the problem?

  3. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yep. I just gave you a hint. Use that hint on the left hand side.

  4. janet2009
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so I tried using that formula but the answer is a huge number.

  5. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So you did log(x(x+2))=2 because that is what I asked you to do.

  6. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Then base 10 on both sides so you can undo that log on that one side.

  7. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[10^{\log(x(x+2))}=10^2 \]

  8. janet2009
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes i did that and from there I get X^2+2x=10^2 which becomes x^2+2x-100?

  9. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Solve for x and see if both solutions will work.

  10. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.