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chubbytots

  • 3 years ago

6x^2+5-4=

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  1. Directrix
    • 3 years ago
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    What are the instructions for the posted problem?

  2. chubbytots
    • 3 years ago
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    its factoring diamond

  3. Directrix
    • 3 years ago
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    There's an x missing here, I think --> 6x^2+5-4= --> after the "5." I don't know the diamond technique. I can factor by grouping.

  4. chubbytots
    • 3 years ago
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    yeah factor by grouping :)

  5. Directrix
    • 3 years ago
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    6x^2 +5x -4 What are two numbers that multiply to -24 AND add to 5 ?

  6. chubbytots
    • 3 years ago
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    2?

  7. chubbytots
    • 3 years ago
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    i think e. e

  8. chubbytots
    • 3 years ago
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    ithink anyways i have the other side of it.. its (2x-1)( )

  9. Directrix
    • 3 years ago
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    Okay. What number times -1 will multiply to -4. -1*? = - 4 ? Help me out a little bit, and I can help you finish this. Okay?

  10. chubbytots
    • 3 years ago
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    1

  11. Directrix
    • 3 years ago
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    -1 * 1 = -1 so that is not it.

  12. chubbytots
    • 3 years ago
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    1 can multiply -4

  13. chubbytots
    • 3 years ago
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    no wait wat?? i need to find a number that can multiply by 4?

  14. Directrix
    • 3 years ago
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    Yes, so -1 times 4 = -4 which means 6x^2 +5x -4 = (2x-1)( ? +4 ) We're almost there. (2x) times what equals 6 x^2 ?

  15. chubbytots
    • 3 years ago
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    3x?

  16. chubbytots
    • 3 years ago
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    so its 3x-4?

  17. Directrix
    • 3 years ago
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    Let's see if it works: 6x^2 +5x -4 = (2x-1)( 3x +4 ) ?? @chubbytots What do you think?

  18. chubbytots
    • 3 years ago
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    yep its right actually im answering a puzzle e. e

  19. Lynncake
    • 3 years ago
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    that's right @Directrix

  20. chubbytots
    • 3 years ago
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    \[3x^2-11x-20=\]

  21. Directrix
    • 3 years ago
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    >>so its 3x-4? I did not get that.

  22. chubbytots
    • 3 years ago
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    its 3x+4

  23. chubbytots
    • 3 years ago
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    for da first group and the second group is?

  24. Directrix
    • 3 years ago
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    (2x-1)*(3x-4) multiplies to 6x^2 -11x + 4 which is not the given problem.

  25. Directrix
    • 3 years ago
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    Okay, let's try that.

  26. chubbytots
    • 3 years ago
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    6x^2 -11x + 4=(2x-1)(3x+4)

  27. Directrix
    • 3 years ago
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    (2x-1)*(3x+4) = 6x^2 -3x + 8x -4 = 6x^2 + 5x - 4.

  28. chubbytots
    • 3 years ago
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    thats da second question and da second question is \[3x^2-11x-20=(3x+4)( ? )\]

  29. chubbytots
    • 3 years ago
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    i mean third**

  30. Directrix
    • 3 years ago
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    I only saw the first problem.

  31. chubbytots
    • 3 years ago
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    i need the third problem cuz this is a pzzle v. v

  32. Directrix
    • 3 years ago
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    3x^2 -11x - 20 = (3x+4) * ( ) What times 3x is equal to 3 x^2 ?

  33. chubbytots
    • 3 years ago
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    4x+3?

  34. Directrix
    • 3 years ago
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    3x^2 -11x - 20 = (3x+4) * (x )

  35. Directrix
    • 3 years ago
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    3x times 4x = 12 x^2 -->doesn't work

  36. chubbytots
    • 3 years ago
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    is it positve 3?

  37. Directrix
    • 3 years ago
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    3x times 3 = 9x.

  38. chubbytots
    • 3 years ago
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    yes

  39. Directrix
    • 3 years ago
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    Oh, you mean ( x + 3) as the second factor?

  40. chubbytots
    • 3 years ago
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    yes

  41. Directrix
    • 3 years ago
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    (3x+4) * (x + 3 ) = 3x^2 -11x - 20 ?? 3x^2 + 9x + 4x + 12 Nope.

  42. Directrix
    • 3 years ago
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    We could guess forever.

  43. chubbytots
    • 3 years ago
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    xDD i think lol and another one :O

  44. Directrix
    • 3 years ago
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    Here is where we are: 3x^2 -11x - 20 = (3x+4) * (x ) We have to get -20 for the last term. 4 times what equals - 20 ?--->

  45. chubbytots
    • 3 years ago
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    i think its x-3?

  46. Directrix
    • 3 years ago
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    4 times - 3 is not -20.

  47. chubbytots
    • 3 years ago
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    i mean 2?

  48. chubbytots
    • 3 years ago
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    i mean 5 sorry :o

  49. Directrix
    • 3 years ago
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    4 times 5 is close but 4 times 5 does not equal -20

  50. chubbytots
    • 3 years ago
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    hmmmm

  51. chubbytots
    • 3 years ago
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    i think we need to make one of them a negative right?

  52. Directrix
    • 3 years ago
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    Yes.

  53. chubbytots
    • 3 years ago
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    so-5?

  54. Directrix
    • 3 years ago
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    Yes

  55. chubbytots
    • 3 years ago
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    its x-5?

  56. Directrix
    • 3 years ago
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    3x^2 -11x - 20 = (3x+4) * (x - 5 )

  57. Directrix
    • 3 years ago
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    That works.

  58. chubbytots
    • 3 years ago
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    yes

  59. chubbytots
    • 3 years ago
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    \[6x^2+11x-10=(2x+5)(?)\]

  60. Directrix
    • 3 years ago
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    It's your turn to do this one. :) You come up with the factors, and I will check.

  61. chubbytots
    • 3 years ago
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    i'll be guessing dou

  62. Directrix
    • 3 years ago
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    That's what I ended up doing because you didn't like factoring by grouping.

  63. chubbytots
    • 3 years ago
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    2x+1

  64. chubbytots
    • 3 years ago
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    lol actually this s factoring by grouping.. and i need to do factor diamond

  65. chubbytots
    • 3 years ago
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    its like two steps first is factoring by grouping and factoring diamond

  66. Directrix
    • 3 years ago
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    That diamond thing is sophisticated guessing for me.

  67. chubbytots
    • 3 years ago
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    x. x so can we do factoring by grouping?

  68. Directrix
    • 3 years ago
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    (2x+1)*(2x+5) = 4x^2 + 12x + 5 --> This is from your guess.

  69. Directrix
    • 3 years ago
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    It didn't work.

  70. chubbytots
    • 3 years ago
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    2x-5?

  71. Directrix
    • 3 years ago
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    I'm going to group.

  72. chubbytots
    • 3 years ago
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    is it 6x10?

  73. chubbytots
    • 3 years ago
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    6x10=60 ryt and wet going to make one of them a negative?

  74. Directrix
    • 3 years ago
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    6 + 10 is not 11

  75. Directrix
    • 3 years ago
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    15 and -4.

  76. Directrix
    • 3 years ago
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    x^2 + 11x - 10 = x^2 + 15x - 4x - 10

  77. chubbytots
    • 3 years ago
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    5x+2?

  78. Directrix
    • 3 years ago
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    This thread is so long that I have lost the problem.

  79. Directrix
    • 3 years ago
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    (2x + 5) * ( 3x + 2) That is my last factoring problem on this puzzle.

  80. chubbytots
    • 3 years ago
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    so its 3x+2?

  81. chubbytots
    • 3 years ago
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    3x-2?

  82. Directrix
    • 3 years ago
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    6x^2 + 15x - 4x - 10 = 3x(2x + 5) - 2(2x + 5) = (2x + 5) * ( 3x - 2). Right.

  83. chubbytots
    • 3 years ago
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    owoo that was brain storm >,<

  84. Directrix
    • 3 years ago
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    The more of this stuff you do, the better you get. Except, I seem to be getting worse.

  85. chubbytots
    • 3 years ago
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    ohh yah sure cuz when im learning this i was lazy thats why i came up here >.<

  86. Directrix
    • 3 years ago
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    What is the next factoring problem?

  87. chubbytots
    • 3 years ago
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    how abut this? \[7x^2+13x-2=(x+2)(?)\]

  88. chubbytots
    • 3 years ago
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    xDD under the typing box thou v v v v v

  89. chubbytots
    • 3 years ago
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    actually this factoring group so on this is the new lesson on our school e. e''''

  90. chubbytots
    • 3 years ago
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    and imto lazy about it

  91. chubbytots
    • 3 years ago
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    xDD uhh nope o. o

  92. chubbytots
    • 3 years ago
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    ohh well i better rap dis up cuz im gonna go early tommorow well thanks fo the help :)

  93. Directrix
    • 3 years ago
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    Okay. See later on here.

  94. chubbytots
    • 3 years ago
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    ok byee

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