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lisa2345

  • one year ago

@UsukiDoll

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  1. UsukiDoll
    • one year ago
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    hiiiii

  2. lisa2345
    • one year ago
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    hey :D

  3. lisa2345
    • one year ago
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    okay first question

  4. lisa2345
    • one year ago
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  5. lisa2345
    • one year ago
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    heres the first 3

  6. UsukiDoll
    • one year ago
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    ok can you hold a minute I'm answering another question

  7. lisa2345
    • one year ago
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    yes I can

  8. UsukiDoll
    • one year ago
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    k back

  9. UsukiDoll
    • one year ago
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    so GCF is the greatest common factor.. what doe the equation have in common

  10. UsukiDoll
    • one year ago
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    so what does the equation \[6y^2+12xy^2 \] have in common? hint: there's a variable and a number in common

  11. lisa2345
    • one year ago
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    umm this is for 10?

  12. UsukiDoll
    • one year ago
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    yes

  13. lisa2345
    • one year ago
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    they both have 6 and Y^2

  14. UsukiDoll
    • one year ago
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    yes they do

  15. UsukiDoll
    • one year ago
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    so when there is something in common we can place that common part to the side.. so 6y^2 ( whatever there is left)

  16. UsukiDoll
    • one year ago
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    so since a 1 and 2x is left behind we have 6y^2(1+2x) we can check easily by distributing them back 6y^2+12xy^2

  17. lisa2345
    • one year ago
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    so it A?

  18. UsukiDoll
    • one year ago
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    yes

  19. UsukiDoll
    • one year ago
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    for #11.. there is only a number in common because there are 2 terms with a variable but the last one is just a number

  20. lisa2345
    • one year ago
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    3 is a common factor

  21. UsukiDoll
    • one year ago
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    yes :D

  22. UsukiDoll
    • one year ago
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    so 3 is on the side and what do we have left ( ) ?

  23. lisa2345
    • one year ago
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    its B?

  24. UsukiDoll
    • one year ago
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    no because originally we have 3 terms.. B only has two terms.

  25. UsukiDoll
    • one year ago
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    there's a way to make this a bit faster... since 3 is the common factor we just divide 12/3 18/3 and 3/3

  26. lisa2345
    • one year ago
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    Got you.. so its D?

  27. UsukiDoll
    • one year ago
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    yes

  28. lisa2345
    • one year ago
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    for twelve, i have to right the answer out.

  29. UsukiDoll
    • one year ago
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    hmm there is just a number is common.. it's similar to the previous problem

  30. lisa2345
    • one year ago
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    okay.

  31. UsukiDoll
    • one year ago
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    so what number can be used to divide 3, 9, and 27 ?

  32. lisa2345
    • one year ago
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    3

  33. lisa2345
    • one year ago
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    is my answer ...

  34. lisa2345
    • one year ago
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    3(x2-3x+9) ?

  35. UsukiDoll
    • one year ago
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    wow you're picking this up fast that's right \[3(x^2-3x+9) \rightarrow 3x^2-9x+27\]

  36. lisa2345
    • one year ago
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    okay next 3

  37. lisa2345
    • one year ago
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  38. lisa2345
    • one year ago
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    is 13 d?

  39. lisa2345
    • one year ago
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    just a quick guess :/

  40. lisa2345
    • one year ago
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    wait no I mean b

  41. UsukiDoll
    • one year ago
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    yes it is B for 13

  42. lisa2345
    • one year ago
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    14 b also?

  43. UsukiDoll
    • one year ago
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    yes

  44. lisa2345
    • one year ago
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    okay 15 now

  45. lisa2345
    • one year ago
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    2 is common

  46. UsukiDoll
    • one year ago
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    yes 2 is common

  47. lisa2345
    • one year ago
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    2(x2+9x+8)

  48. UsukiDoll
    • one year ago
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    correct

  49. lisa2345
    • one year ago
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    but I have to do the +C -C

  50. UsukiDoll
    • one year ago
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    hmmm that would mean that x^2+9x+8 is factorable

  51. lisa2345
    • one year ago
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    2(x+8)(x+1)

  52. UsukiDoll
    • one year ago
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    so there's more than just factoring out the 2 .... SOOO FAST! :D

  53. lisa2345
    • one year ago
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    did I get it right?

  54. UsukiDoll
    • one year ago
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    yeah

  55. lisa2345
    • one year ago
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    yay! next 3

  56. lisa2345
    • one year ago
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    well 2 lol

  57. lisa2345
    • one year ago
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  58. UsukiDoll
    • one year ago
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    we need long division for this xD

  59. lisa2345
    • one year ago
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    what does that mean?

  60. lisa2345
    • one year ago
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    I don't understand :/

  61. UsukiDoll
    • one year ago
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    I'm getting burned out.. it's like .. oh mai brain T_T

  62. lisa2345
    • one year ago
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    lol geeeeez louiseeee

  63. UsukiDoll
    • one year ago
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    wait. see now I'm not thinking right... we just use factoring and take out the like terms

  64. UsukiDoll
    • one year ago
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    the choices gave me a hint... if it was long division the answer would look different.. ok I can do this now xD!

  65. UsukiDoll
    • one year ago
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    for the first problem, there is a perfect square binomial

  66. lisa2345
    • one year ago
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    Yay we are back on the road lol and okay.

  67. UsukiDoll
    • one year ago
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    so x^2-16... that's a perfect square in the form of (x^2-y^2) = (x+y)(x-y)... so what is the square root of 16?

  68. lisa2345
    • one year ago
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    4?

  69. UsukiDoll
    • one year ago
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    yes so we have (x+4)(x-4) in the denominator.

  70. lisa2345
    • one year ago
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    that makes it A?

  71. UsukiDoll
    • one year ago
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    I think we got lucky on the numerator part of this since we need to find a combination of numbers that can produce an 8 and a 16 4 x 4 = 16 4+4 is also 8 and since the pattern is all plus signs, our end result should be something like (x+4)(x+4) and wow it is A

  72. UsukiDoll
    • one year ago
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    because there is at least one pair of x+4 (both in numerator and denominator) in common so that gets cancelled.

  73. lisa2345
    • one year ago
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    okay 17 now

  74. UsukiDoll
    • one year ago
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    numerator is that there is one number in common denominator is that it can be split up since 12 is 6 x 2 = 12 and 6-2 = 4 the problem is should the 2 be negative or the 6 be negative in order to achieve the result of x^2+4x-12

  75. lisa2345
    • one year ago
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    (x+6)(x-2)

  76. UsukiDoll
    • one year ago
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    yes an for the numerator?

  77. lisa2345
    • one year ago
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    5

  78. UsukiDoll
    • one year ago
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    yes 5 is common 5(x-2)/ (x+6)(x-2) who gets canceled out?

  79. lisa2345
    • one year ago
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    (x-2)

  80. UsukiDoll
    • one year ago
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    yes so the answer is 5/(x+6)

  81. lisa2345
    • one year ago
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    d?

  82. UsukiDoll
    • one year ago
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    I have to go for a bit... xD need a break xD!

  83. lisa2345
    • one year ago
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    okay

  84. lisa2345
    • one year ago
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    You there?

  85. lisa2345
    • one year ago
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    hello?

  86. UsukiDoll
    • one year ago
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    I have to go eat dinner. I'll be back

  87. lisa2345
    • one year ago
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    okay :)

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