Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Makayla43

  • 2 years ago

Solve by factoring. 4x2 + 23x + 15 = 0

  • This Question is Closed
  1. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ooh i like these

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

    \[ax^2+bx+c=0\] So what you want to do is find factors of a*c that have product a*c and sum b.

  3. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (x+5)*(4*x+3)

  4. Makayla43
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Good! Can you help me?

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

    find two factors*

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

    So what is a here? And what is b here? And what is c here?

  7. Makayla43
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[4x ^{2}+23x+15=0\]

  8. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (x+5)*(4*x+3) x= -5 and -3/4 right

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

    @timo86m I don't think it helps to give the answer. Can you explain how you got those factors?

  10. Makayla43
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    A:x = 0.8 or x = -0.75 C:x = 0.75 or x = 5 B:x = -3 or x = -1.25 D:x = -0.75 or x = -5

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

    @Makayla43 if you want to learn this, I'm trying to teach you.

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

    What is a,b, and c in your equation?

  13. Makayla43
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @KNicksfan4life :D (:

  14. KNicksfan4life
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (4x-3)(x-5)

  15. Makayla43
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @freckles what do you mean a,b,and c?

  16. KNicksfan4life
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    is that rite

  17. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it not right

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

    \[ax^2+bx+c=0\] \[4x^2+23x+15=0\]

  19. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (x+5)*(4*x+3) if you not sure you can always expand this

  20. Makayla43
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Solve by factoring. -3x2 - x + 2 = 0

  21. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -(x+1)*(3*x-2)

  22. Makayla43
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[-3x ^{2}-x+2=0\]

  23. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -3x2 - x + 2 = 0 you actually mean -3x^2 - x + 2 = 0

  24. Makayla43
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    A:x = 0.5 or x = 0.33333 C:x = 1 or x = -0.66667 B:x = 0.33333 or x = -2 D:x = -1 or x = 0.66667

  25. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I think it d

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

    You guys how is this teaching and how is this learning? Please try to teach @Makayla43 and not just give the answer. And @Makayla43 you shouldn't be just looking for answers. I think freckles here was trying to teach you how to do this.

  27. Makayla43
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Omg.

  28. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i teached, I said expand my factor if she doubts it lol.

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

    But @timo86m how do you get the factors? Please explain that part so she will know how to do it.

  30. Makayla43
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Goodbye. He sent me a message a explained.

  31. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4x2 + 23x + 15 = 0 number that up to 15 and product is 23

  32. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    To factor is mostly guess work that is where I draw the line :)

  33. timo86m
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    number that up to c and product is b coefficient. It is more important to show why it works then how to do something that is mostly guess work.

  34. 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.