Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Makayla43

  • 3 years ago

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

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

    ooh i like these

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

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

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

    Good! Can you help me?

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

    find two factors*

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

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

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

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

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

    @KNicksfan4life :D (:

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

    (4x-3)(x-5)

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

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

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

    is that rite

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

    it not right

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

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

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

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

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

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

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

    I think it d

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

    Omg.

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

    Goodbye. He sent me a message a explained.

  31. timo86m
    • 3 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
    • 3 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
    • 3 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

Sign Up
Find more explanations on OpenStudy
Privacy Policy