A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Anguyennn

  • one year ago

Hello could I get some help with evaluating 2√5/√7

  • This Question is Closed
  1. kittiwitti1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[2\sqrt{5}\sqrt{7}\text{ or }2\sqrt{5\sqrt{7}}?\]

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

    none of those

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

    here ill draw it out for you

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

    |dw:1442638593539:dw|

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

    I want to know how to do it

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

    algebraically

  7. triciaal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1442646154332:dw|

  8. triciaal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    rationalize the denominator to get rid of the radical in the denominator. means multiply by one expressed as shown square root of a number * square root of a number = that number

  9. UnkleRhaukus
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @triciaal is right \[\frac{2\sqrt 5}{√7}\\ =\frac{2\sqrt 5}{√7}\times1\\ \frac{2\sqrt 5}{√7}\times\frac{\sqrt7}{\sqrt7}\\ \frac{2\sqrt 5\times\sqrt7}{√7\times\sqrt7}\\ =\tfrac27\sqrt5\sqrt7\]

  10. triciaal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I would end at (2 root 35)/7 to have only one radical

  11. 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.