A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Can someone help me with this cube roots question?

  • This Question is Closed
  1. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    I can try :)

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

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

    I know you have to substitute in the values, but I can't figure out how to simplify to get a whole number. We haven't done imaginaries yet so I know I can't use those.

  4. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    What do you mean you can't figure out how to simplify to get a whole number?

  5. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    You know what a cubed number is, right?

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

    All the values in the example questions are getting whole numbers for y. I don't know how when they aren't perfect cubes.

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

    Yes

  8. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    They are perfect cubes >.<

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

    I'm not sure what to do then

  10. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    And take a look at that first one you did. You made a small mistake.

  11. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    How did you get 1?

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

    Oh wait is it -1?

  13. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    \[\sqrt[3]{-1}=-1\] and then you also have to subtract 2 from that. \(-1-2=?\)

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

    Oops, -3.

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

    Then how do I find the cube root of -3?

  16. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    you don't need to find the cube root of -3. Now that you have -3, all that it means is that \[-3=\sqrt[3]{-1}-2\]

  17. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    so -3 is your y-value. The only thing you need to take the cube root of is the x-value that was given to you

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

    So the next one would be -2?

  19. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Yes! \(\Huge\color{lime}{\checkmark}\)

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

    Then 0, then 2?

  21. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Yep!

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

    Thank you so much!!

  23. BloomLocke367
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    You're welcome! I'm glad I was able to help :)

  24. 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.