Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

xRAWRRx3 Group Title

Find the sum of the roots of 2x^2 = 13x - 15.

  • one year ago
  • one year ago

  • This Question is Closed
  1. ktnguyen1 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    2x^2-13x+15=0 2x^2-15x+2x+15=0 -x(2x-15)+(2x+15)=0 (2x+15)(1-x)=0 2x+15=0 or 1-x=0 x=-15/2 or x=1

    • one year ago
  2. ktnguyen1 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Im not sure that I answer your question

    • one year ago
  3. xRAWRRx3 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    oh yes, thanks, I got that but then when I checked the answer, it was wrong.

    • one year ago
  4. ktnguyen1 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so is my answer corrcet?

    • one year ago
  5. xRAWRRx3 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    well, i got the same answer as you did but when i tried to CHECK the answer, it wasn't right.

    • one year ago
  6. xRAWRRx3 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    doesn't equal out.

    • one year ago
  7. ktnguyen1 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    oh I saw the problem

    • one year ago
  8. xRAWRRx3 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    what is it?

    • one year ago
  9. ktnguyen1 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    2x^2-10x-3x+15=0 2x(x-5)-3(x-5)=0 (2x-3)(x-5)=0 x=3/2 or x=5

    • one year ago
  10. xRAWRRx3 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    why did you separate them like that though?

    • one year ago
  11. ktnguyen1 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    the corrct answer after put #in to check x=5

    • one year ago
  12. ktnguyen1 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    just easy for me to see

    • one year ago
  13. xRAWRRx3 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    okay, thank you :)

    • one year ago
  14. ktnguyen1 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    you are welcome

    • one year ago
    • Attachments:

See more questions >>>

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.