Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

hawkfalcon

  • 2 years ago

What is x in this equation?

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

    \[\cos^2x +3cosx+2 = 0\]

  2. Mimi_x3
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    u = cosx

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

    Oh then its just a quadratic :O

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

    :P What happens to the cos though? Do it after?

  5. Mimi_x3
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    u^2 + 3u + 2 = 0 solve for u then later sub it back in btw is it only me that latex is not working?

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

    Okay, thank you. I think its just you:O

  7. Mimi_x3
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    np

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

    I can't believe I didn't see it was just a simple quadratic *.*

  9. Mimi_x3
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    well using a substitution is easier; at times when you see like the x squared; there is a high chance that its a quadratic. so use a substitution.

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

    Alright! Thank you so much:D

  11. 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.