A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 5 years ago

7-5). Reduce the following rational expression to lowest terms, if possible. 2x^2+5x-12 ____________ x^4-256

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

    Try to factorise top and bottom. Top factorises as (2x - 3)(x + 4). Do you know how to factorise a non-monic quadratic expression? The bottom looks like the difference of two squares: x^2 squared and 16 squared So bottom is (x^2 +16)(x^2 - 16), but second bracket is again the difference between two squares So bottom line is (x^2 + 16)(x - 4)(x + 4) We can cancel top and bottom (x + 4) to give us: (2x - 3)/(x^2 + 16)(x - 4)

  2. 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

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...


  • 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.