Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

kerribaberri Group Title

when kx3 + px2 - x + 3 is divided by x - 1, the remainder is 4. When kx3 + px2 is divided by x - 2, the remainder is 21. Find the values of k and p.

  • one year ago
  • one year ago

  • This Question is Open
  1. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353959611123:dw| got this part ?

    • one year ago
  2. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Lets do this fast @kerribaberri Just tell me if you do not understand.

    • one year ago
  3. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah!

    • one year ago
  4. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    alright, is there another way to do this though rather than to divide all the time?

    • one year ago
  5. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    an easier solution or something?

    • one year ago
  6. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @kerribaberri This is the easiest method on earth if you learn it The easiest and the fastest :)

    • one year ago
  7. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    alright! let's do this LOL

    • one year ago
  8. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353959860849:dw| We take the k down.

    • one year ago
  9. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353959905760:dw| We multiply the k by 1 k*1=k

    • one year ago
  10. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353959933565:dw| We multiply it and put it there,following me @kerribaberri

    • one year ago
  11. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    okay so we multiply everything by the 1, yes?

    • one year ago
  12. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yeah

    • one year ago
  13. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    why is it just 1 rather than x - 1?

    • one year ago
  14. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353960062608:dw| We add p and q so we get p+q now and then multiply it by 1

    • one year ago
  15. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    In this method we take x-1 put it equal to 0 so x-1=0 x=1 So we have to put this .

    • one year ago
  16. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Did you get my step above shown in the diag ?

    • one year ago
  17. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes, i did.

    • one year ago
  18. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    is it usually the opposite? so instead of -1 it is 1?

    • one year ago
  19. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so if i was to be given x - 3, it would be divided all by 3?

    • one year ago
  20. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353960245291:dw| here we have added (p+q)+(-1)=p+q-1 and then multiply it by 1

    • one year ago
  21. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @kerribaberri Yeah you are right but if the question come 2x-2=0 then 2x=2 x=1

    • one year ago
  22. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Did you get my step above ?

    • one year ago
  23. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ahh, i see okay

    • one year ago
  24. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    then the last step after that would be (p + k - 1 + 3) ?

    • one year ago
  25. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353960431384:dw| Yeah right :D Shall i continue ?

    • one year ago
  26. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    :D sure

    • one year ago
  27. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353960534857:dw| We will always seprate the last number :)

    • one year ago
  28. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I know you will ask why ? right ?

    • one year ago
  29. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @kerribaberri ?

    • one year ago
  30. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah, why? :P

    • one year ago
  31. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i was wondering why there was a line in between

    • one year ago
  32. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353960695933:dw| Here P(x)=polynomial of x and R(x)=remainder of x So we seprate them ,Got it @kerribaberri ?

    • one year ago
  33. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ohhh okay i get it @hba

    • one year ago
  34. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    We have been provided in the question that the remainder is 4 so R(x)=4 got it ?

    • one year ago
  35. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @kerribaberri ??

    • one year ago
  36. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yup :)

    • one year ago
  37. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah, i got it. :)

    • one year ago
  38. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I can replace R(x) with p+k-1+3 so p+k+2=4 got it @kerribaberri ?

    • one year ago
  39. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes @hba

    • one year ago
  40. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so p+k=4-2 p+k=2

    • one year ago
  41. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Now lets solve the other one.|dw:1353961284346:dw| Your turn @kerribaberri Do it i'll help you where you go wrong :)

    • one year ago
  42. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so 2 goes on the left..

    • one year ago
  43. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yeah start doing it in the diag

    • one year ago
  44. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    k p -2 2 ? o_O

    • one year ago
  45. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Do it in the diag lol

    • one year ago
  46. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Do you see a pencil on my diag press it and start working

    • one year ago
    1 Attachment
  47. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    okayy

    • one year ago
  48. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    LOL did i pick the correct numbers though?

    • one year ago
  49. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1353961667693:dw|

    • one year ago
  50. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Where did -2 and +2 come from ?

    • one year ago
  51. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1353961803438:dw|

    • one year ago
  52. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i took the 2 from the equation and.. ohhhhhhh am i supposed to multiply -2 by 3?

    • one year ago
  53. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ohhhh wait, i didn't realize the 3 and the 2 were exponents..

    • one year ago
  54. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i thought they were base numbers

    • one year ago
  55. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    The equation in the first thing was kx3 + px2 - x + 3 so i got k p -1 3 In the second case the equation iss kx^3+px^2 so you should get k p right ?

    • one year ago
  56. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353962035949:dw||dw:1353962058098:dw|

    • one year ago
  57. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Got it ?

    • one year ago
  58. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @kerribaberri Please concentrate Its easy.

    • one year ago
  59. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    okay i got it..

    • one year ago
  60. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i see where the k and p are coming from but i don't see where the last two come from

    • one year ago
  61. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353962174399:dw| Now continue

    • one year ago
  62. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353962211804:dw|

    • one year ago
  63. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Got where the last two came from ?

    • one year ago
  64. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah i see it there because there are numbers, but this one has none?

    • one year ago
  65. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So you do not have to write anything.

    • one year ago
  66. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353962420562:dw|

    • one year ago
  67. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ohhh, i never thought that was an option

    • one year ago
  68. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Are you solving it now lol ?

    • one year ago
  69. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    r(x) = 21

    • one year ago
  70. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @kerribaberri Please try.

    • one year ago
  71. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @kerribaberri First solve it lol

    • one year ago
  72. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353962559852:dw| bring the k down multiply it by 2

    • one year ago
  73. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    if there's no numbers|dw:1353962609644:dw|

    • one year ago
  74. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    What is wrong with you ?

    • one year ago
  75. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    The method is bring the k down multiply i by 2 so it will become 2k then it will go under p

    • one year ago
  76. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @kerribaberri Please try to understand i feel like slamming my head in the wall.

    • one year ago
  77. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @kerribaberri You there ?

    • one year ago
  78. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i'll just ask someone else LOL

    • one year ago
  79. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    No i am showing you wait.

    • one year ago
  80. kerribaberri Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    No you are not..

    • one year ago
  81. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353963033373:dw|

    • one year ago
  82. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So, R(x)=21 2x+p=21 got it ?

    • one year ago
  83. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353963147883:dw|

    • one year ago
  84. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1353963244019:dw|

    • one year ago
  85. hba Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @kerribaberri got it ?

    • one year ago
    • Attachments:

See more questions >>>

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.