A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

someone wanna help me? x squared = 12 ...solve using square root property?

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

    Take square root of both sides.

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

    so its x=3 rad 2?

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

    What is the square root over the two or the three?

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

    idk?

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

    That's not a good answer.

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

    idk how to solve this problem? i dont know what the sqauare root of 12 is. all i no is that it is 3 rad 2......what else do i need to do?

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

    You keep the 12 under the radical and break it down: 2.2.3 all under the square root sign.

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

    well...so its not 3 square root of 2?

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

    Right. Actually it is sq rt 4=2

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

    how is it the square root of 4?

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

    sq rt of 12 is equal to sq rt of (4.3)

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

    Not to confuse you, I was just correcting your statement\[2\sqrt{3}\]

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

    so is square root of (x-5) ^ 2 = sqaure root of 2 does x =6?

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

    What?! You lost me.

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

    ok i feel dumb. ok solve this using the square root property x-5 ^ 2 =2

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

    i got 6

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

    Same process: sq rt of both sides.

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

    ok i did and got x-5 = 1

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

    sq rt of 2 is not 1

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

    o...well 2/2 = 1

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

    That is correct, but not part of this problem.

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

    ugh ok so what is the square root of 2?

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

    Sq rt of 2 is sq rt of 2.

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

    but i have to simplyfy ? whats the answer of the equartion then? just x-5 = sqr 2?

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

    You can get a number by using calculator, but since you are studying sq rt you can leave it in that form, same way you left sq rt of 3 in previous problem

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

    do you no how to compelte the square?

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

    Yes, it's that thingy where you divide by 2, then square it

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

    ok x ^ 2 - 8x = 3

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

    slve by completing the squarue

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

    You take that thing in front of x, divide it by 2, square it, add it to each side.

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

    ??? can u write it out?

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

    theres nothing infront of x

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

    Looks like -8 to me.

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

    oo yeah i got u

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

    so it would be 16x ^ 2 - 4x = 19?

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

    You did more than my instructions said, the x^2 -8x remains part of the equation, the thing you calculated is added but they are apples and oranges you just write it in.

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

    so how would you write it?

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

    \[x ^{2}-8x+16=3+16\]

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

    ok a couple more.... how would you do 1+5i/3-2i

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

    Have to look up my old notes, been a while.

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

    ok

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

    You have to do conjugation: multiply by (3+2i)/(3+2i)

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

    wait how can u multiply and divide at the same time??

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

    its 2AM...im sorry im sooo tired but this is due at 8AM

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

    You have to manipulate your original problem in order to have something to work with. The choice of conjugation is an off-shoot of the bottom term of your problem. In math you can't change things but you can do tricks, for example if you multiply by 1, you have not changed anything. The thing I told you to multiply is equal to 1.

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

    ok so how do u solve the problem?

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

    You use the FOIL method multiply top The top looks like this (1+5i)(3+2i) The bottom is (3-2i)(3+2i)

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

    i got 13 + 17i

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

    I assume you are working on the top only, recall FOIL method: First, Outside, Inside, Lasts. Be careful to add only like terms, add apples to apples and oranges to oranges.

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

    that what i did cuz u said the bottom = 1

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

    Well, the bottom is not equal to 1, the whole term I introduced is equal to 1. You skip to many steps. Take baby steps, produce the terms of FOIL, eg First is1x3=3

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

    ok .... this is the answer i got..of its wrong just tell me the answer....... 13+17i / 13-12i

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

    You can't get that, my first term is 3

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

    3+ 2i +15i +10i^2 which i^2 = -1 over 9-6i -6 - 4i^2

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

    ?

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

    That's it you got rid of some of the i's but there is still one left in top, must check notes again.

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

    ok how do you do 6/cube root of 29?

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

    Not much you can do with that, if you are work with cube roots like you were with square roots.

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

    o snap i wrote that wrong... i meant 6/cube root of 2a ^ 2 sorry!

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

    I am looking over my notes for complex numbers, you are doing everything right; seems the point is to at least get it out of the bottom. Break it down as much you can, final answer would have i in it.

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

    i need that rationalized

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

    For these, they just want you to move square root out of the the bottom. So the same process as complex number, you multiply by\[\sqrt[3]{2a ^{2}}/\sqrt[3]{2a ^{2}}\]

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

    so it would be 6 cube root 2a ^2 over ????

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

    If you multiply cube root of something by cube root of something you would get something. So the answer is whatever is under radical.

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

    2a? is the top right?

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

    2a^2, yes top is right.

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

    ok last problem!! square root of 2x+11 =5

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

    You do the opposite of earlier problems: square both sides.

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

    7?

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

    You skipped to many steps. Jumping in shower.

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

    im going to bed night

  72. 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

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.