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

febylailani Group Title

is V25 = ±5 always? why?

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. febylailani Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    V25 = \[\sqrt{25}\]

    • 2 years ago
  2. akash123 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    actually it denotes positive square root of 25

    • 2 years ago
  3. akash123 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so answer will be 5

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

    @akash123 you're talking about principal square roots...

    • 2 years ago
  5. Chlorophyll Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Because 5² = (=5)² = 25

    • 2 years ago
  6. akash123 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes it's... but if anyone use this symbol of sqrt then it implies positive sqrt only eg as we write sqrt(sin^2x) = I sinx I

    • 2 years ago
  7. lgbasallote Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    (=5)^2? interesting

    • 2 years ago
  8. akash123 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I think it's a convention only and moreover it's frequently used in calculus

    • 2 years ago
  9. Chlorophyll Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So YES, the even root always yield 2 results :)

    • 2 years ago
  10. Chlorophyll Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    It's basic Pre Algebra!

    • 2 years ago
  11. Chlorophyll Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Because 5² = (-5)² = 25

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

    yup. but why? hm..

    • 2 years ago
  13. akash123 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    x^2= x* x

    • 2 years ago
  14. akash123 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    25= 5*5 and 25 =(-5)* (-5)

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

    i know that. i mean... argh. i cant speak english very well. but i think that's enough thanks for your hardwork xD

    • 2 years 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.