Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Fakshon

  • one year ago

Please tell me if this is right... Solve the logarithmic equation: log_4(x-18) + log_4 (x-3) = 2 log_4((x-18)(x-3)=4^2 x^2-21x+54=16 x^2-21x+38=0 (x-2)(x-19)=0 x=2, x=19 <--- Answer

  • This Question is Closed
  1. hartnn
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    your final answer is correct but the 2nd step will be log_4((x-18)(x-3)=2 then 3rd step x^2-21x+54=16 is correct

  2. hartnn
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    or your 2nd step could be log_4((x-18)(x-3)=log_4 (4^2)

  3. Fakshon
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yea I did that but I skipped the step on here. I wrote that on my paper.

  4. hartnn
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    then you are correct

  5. hartnn
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    oh, wait i just realized, x=2 cannot be the answer

  6. hartnn
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    because that would make x-3 as negative then log (x-3) will not be defined @Fakshon

  7. 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.