A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

(x-1)^2/3-13=3 x-4=9x *the 9x is a radical *x+6*-*x-5*=1 the stuff inside the stars is in its own radical sign

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

    Is that three different problems?

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

    yes

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

    if I understand the problem the approach is: multiply both sides by 3: (x-1)^2 -39=9 add 39 to both sides: (x-1)^2 = 48 x=2* (3)^1/2 +1

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

    \[(x-1)^{2/3}-13=3\] x-4 = √(9x) \[\sqrt{x+6}-\sqrt{x-5}=1\]

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

    @tbates, yes, thats what it looks like

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

    Ok. so the first one add 13 to both sides first

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

    tbates when u get done will u help me with this one question? i got the answer i just need to know if its right.

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

    (x−1)^(2/3) = 16 now raise both sides to the 3/2 power x-1 = 16^(3/2) x-1 = 64 so x = 65

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

    oh i see

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

    To get rid of a square root raise both sides to the 2nd power. (√x is the same as x^(1/2)

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

    (x-4)=√9x (x-4)^2 = 9x now do you know how to raise x-4 to the second power?

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

    i gotta do -4(-4) so its gonna be x^2+16=9x?

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

    almost but you also will have a -8x on the left

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

    (x-4)^2 = (x-4)(x-4) and you have to distribute x^2 - 4x - 4x + 16 x^2 - 8x + 16 = 9x

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

    do i bring the 9x to the lefts side, or the 8x to the right side

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

    I would move the 9x to the left side by subtracting it.

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

    So you will end up with x^2 - 17x + 16 = 0 Now do you know the quadratic formula?

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

    i cant remember

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

    whats the formula for it

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

    [-b+-√(b^2-4ac)]/2a

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

    http://www.scientificpages.net/math/images/Quadratic_Formula.gif

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

    oh i remember this, let me try and solve it real quick and ill write the answers

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

    Excellent!

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

    ok so far i got 17+-*225/32*

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

    (17+-√225)/2 √225 = 15 (17+15)/2 = 16 (17-15)/2 = 1 The answer is x = 1 and 16

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

    how did u get the 2, on the first line

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

    in the denominator of the quadratic formula you have 2a and in the problem a = 1 (the number in front of the x^2 term)

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

    oh!! i multiplied the c on the bottom, oh ok

  29. 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.