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anonymous

  • 5 years ago

I'm sure this looks extremely easy.. But I cant figure it out. factoring 12x^2-10x-12=0

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  1. anonymous
    • 5 years ago
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    Factor out a 2 to start.

  2. anonymous
    • 5 years ago
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    Okay.. I did that

  3. anonymous
    • 5 years ago
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    So then you divide by the 2 and end up with 6x^2 - 5x - 6 = 0

  4. anonymous
    • 5 years ago
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    Then you would use the AC method.

  5. anonymous
    • 5 years ago
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    AC method?

  6. anonymous
    • 5 years ago
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    is that where you take the coefficient of the first term and multiply it with the last term and find two multiples that add to equal the middle term?

  7. anonymous
    • 5 years ago
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    Yeah :D

  8. anonymous
    • 5 years ago
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    haha okay well I did that from the get go, but I'm left with 36?

  9. anonymous
    • 5 years ago
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    Sorry I was trying to fix a printer haha

  10. anonymous
    • 5 years ago
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    it's okay.. I totally understand. I'm just thankful someone replied!

  11. anonymous
    • 5 years ago
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    Actually I lied haha, wrong method sorry. Well, right method but in the wrong way. Step 1: Multiply your first term by your last term: 6 x 6 = 36

  12. anonymous
    • 5 years ago
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    Step 2: Find two integers when multiplied together get 36, but when added together equal your middle term: 5 -4 and 9

  13. anonymous
    • 5 years ago
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    OMG! I feel like the biggest idiot! I so had that I just didnt even thing about making the four negative wow. you probably think I'm so dumb lol

  14. anonymous
    • 5 years ago
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    Step 3: Rewrite the middle term by replacing the (5x) with the two numbers chosen. (-4 and 9) 6x^2 -4x +9x + 12 = 0

  15. anonymous
    • 5 years ago
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    Not at all :) Do you know where to go from there?

  16. anonymous
    • 5 years ago
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    Yes:] I do.. Thank you So much! And you better not go anywhere.. I'm sure I will need you again.. I have 50 more to go lol

  17. anonymous
    • 5 years ago
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    Haha alright :) I think I will write the rest of the steps anyway just in case anyone else needs to know how to do the AC method.

  18. anonymous
    • 5 years ago
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    I have another one..

  19. anonymous
    • 5 years ago
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    alright :)

  20. anonymous
    • 5 years ago
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    I'm sure you're going to think I'm dumb again.. lol

  21. anonymous
    • 5 years ago
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    I didn't think you were dumb in the first place..

  22. anonymous
    • 5 years ago
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    Did it not post?

  23. anonymous
    • 5 years ago
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    Nope haha

  24. anonymous
    • 5 years ago
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    2x^2+X-15=0 This seriously looks as easy as the first one.. Thats sweet of you to not think I'm dumb lol

  25. anonymous
    • 5 years ago
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    so what are you trying to find terms for?

  26. anonymous
    • 5 years ago
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    huh?

  27. anonymous
    • 5 years ago
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    Are you using the AC method? First term times last term? 2 X 15 So you are looking for terms that multiply to get 30 and add up to get your middle term, which in this case is 1

  28. anonymous
    • 5 years ago
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    It doesnt specify which method to use.. But I'm sure thats what it is lol

  29. anonymous
    • 5 years ago
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    Whenever you are trying to factor and you have a number in front of your x^2 term, you are going to want to use the AC method :)

  30. anonymous
    • 5 years ago
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    Ohtayyyy

  31. anonymous
    • 5 years ago
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    So do you know where to go from there?

  32. anonymous
    • 5 years ago
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    No lol

  33. anonymous
    • 5 years ago
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    oh.. haha so find numbers that when multiplied get 30 and add up to 1

  34. anonymous
    • 5 years ago
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    Sorry my laptop froze.. Anyways I got 6 and -5 ... Duh!

  35. anonymous
    • 5 years ago
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    Sorry, my internet went out, and my tutee came haha So, do you know where to go from there?

  36. anonymous
    • 5 years ago
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    Tutee? And yes I finished it.. I'm not going to do the rest of my paper though.. I'm just gonna turn it in as is haha

  37. anonymous
    • 5 years ago
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    Yeah, I am a math tutor. :) And you really should finish :/

  38. anonymous
    • 5 years ago
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    Aweee! That's awesome! You can tutor me too lol.. Anyways I'm excused from class because of a death in the family but I still have to turn it in before seven

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