Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

meow18

  • 4 years ago

Add and simplify if possible:

  • This Question is Closed
  1. meow18
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[3 \over x-5 \] + \[5 \over x ^{2}-25\]

  2. gandalfwiz
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    do u know what's special about x^2 -25?

  3. meow18
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No...

  4. gandalfwiz
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    it's something called "the difference of 2 perfect squares".

  5. gandalfwiz
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    all that means is x^2 - a perfect square=(x+the square root)(x-the square root)

  6. gandalfwiz
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so x^2-25 becomes (x+5)(x-5)

  7. meow18
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Oh

  8. gandalfwiz
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    k, so now u have|dw:1324334896764:dw|

  9. gandalfwiz
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    multiply the 3/x-5 by (x+5)/(x+5)

  10. gandalfwiz
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    that gives us a common denominator

  11. meow18
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So \[3x + 20 \over (x+5) (x-5)\]

  12. gandalfwiz
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes!

  13. gandalfwiz
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so busy concentrating on my drawing that I couldn't see what you posted :)

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

    @meow - see the lcm question

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

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy