Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

BrianWest

  • 2 years ago

help solving polinomial equations

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

    \[x ^{3}+216=0\]

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

    1. Subtract 216 from both sides 2. Take the third root of both sides.

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

    what does it look like worked out, i am confused

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

    Now now, don't you go human wolframing without giving the answer. ;)

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

    Can you subtract 216 from both sides?

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

    yes, i get x^3=-216

  7. Mertsj
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Do you know what a third root is?

  8. Mertsj
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    For example, the third root of 8 is 2 because 2 raised to the third power is 8

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

    yes, the thierd root of 216=6 x=6

  10. Mertsj
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1363827771232:dw|

  11. Mertsj
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    What is the third root of -216?

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

    -6i

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

    -6 or 6i

  14. Mertsj
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Just plain -6 because -6 x -6 x -6 = -216

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

    so my answer is -6... correct

  16. Mertsj
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Correct. Very good.

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

    please help,how do you work. confused. if p(x)=3x^2x+5 and r(x)=x^3 +x+1, find each value.. problem: 4p(a)

  18. Mertsj
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Find the p(a) be replacing each x with a Find 4p(a) by multiplying that result by 4

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

    i have p(a) = 3a^2 -2a +5

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

    my final answer is 4p(a) = 45 is this correct???

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

    is this correct

  22. 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.