A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Simplify 3 square root of 10 end root plus 7 square root of 15 end root minus 6 square root of 10 end root minus 4 square root of 15.

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

    can you make a drawing of your expression, please?

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

    |dw:1438793563170:dw|

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

    ok!

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

    then we can simplify it, like below: \[\Large \left( {3 - 6} \right)\sqrt {10} + \left( {7 - 15} \right)\sqrt {15} = ...\] since I have grouped similar radicals

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

    right

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

    oops... I have made a typo, here is the right expression \[\Large \left( {3 - 6} \right)\sqrt {10} + \left( {7 - 4} \right)\sqrt {15} = ...\]

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

    now you have to compute the coefficients, namely: 3-6=... 7-4=...

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

    -3 and 3?

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

    yes! so, what is the final expression?

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

    -3√10+3√15?

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

    that's right!

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

    thank you so much!

  13. 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.