A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

I would really appreciate it if someone could help me with this problem thanks x^2=2y^2-2x+8y+5 x^2=26y^2-2x+104y+77 Solve the following systems of equations Answer must be in simplest form.

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

    You can put both in the form: \[x^2 + 2x = f(y) \text{ and } g(y) \implies f(y) = g(y) \] Solve this for y (you can cancel a LOT before you start) and put it back in for x.

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

    ok I'll try that

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

    okay so I decided to use the elimination method I put everything with variable on one side and the number on the other side for both equations. Then I multiplied one equation by -1 I was left with 24y^2+112y=72 Then i divided everything by 8 I got 3y^2+14y=9 I moved the 9 over so it becomes neg & the equationis = to zero Now I am stuck on what to do can you help with the next step? Thanks

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

    "I was left with 24y^2+112y=72" You shouldn't have been. You should have (104-8)y not (104+8)y. The former cancels much more nicely with the y^2 and constant term.

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

    oh okay I see what i did i forgot the neg sign. Thank you! I will try again

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

    so it should by 96y instead of 112y right?

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

    Yes

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

    Sorry, I have to go, but hopefully you will see the (big) factor that cancels and you can solve it easily got the two y values, then plug back in for x.

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

    okay thank you so much!

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

    y=3 & y=-3

  11. 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...

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.