Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

kaymarie12479

  • 2 years ago

(3+5sqrt2)(4-sqrt2)

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

    The approximate answer would be 26.04163056....... Your minimal polynomial would be x^2-4x-574

  2. lcf1999
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    just to clarify is this what you meant: \[(3+5\sqrt{2})(4-\sqrt{2})\]

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

    if you expand that out it becomes 12 - 3sqrt(2) + 20sqrt(2) - 5(2) which is 2 + 17sqrt(2)

  4. lcf1999
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    if so 3 times 4 is 12, 5 sqrt 2 times sqrt 2 is 5 sqrt 4 so that 4 would be out to 2 and 2 times 5 is 10 so 8-10 is -2 which is your answer.

  5. Not the answer you are looking for?
    Search for more explanations.

    Search OpenStudy
    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.