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

AlexisDelgado Group Title

Multiply and simplify: (4 + v8) (4- v8)

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. Muhammad_Nauman_Umair Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    is it v^8?

    • 2 years ago
  2. jhonyy9 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    16-64v^2

    • 2 years ago
  3. jhonyy9 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    16(1-4v^2)

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

    as, a^2-b^2=(a+b)(a-b)

    • 2 years ago
  5. vi3tbloodxx Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    FOIL (4+v8) (4- v8) =16 - 4v8 + 4v8 - 8 = 8

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

    then, =4^2-(v^8)^2 =16-v^16

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

    @vi3tbloodxx you're wrong... (4+v8) (4- v8) =16 - 4v8 + 4v8 - 8 = 8 it should be (4+v8) (4- v8) =16 - 4v8 + 4v8 - 64v^2 =4^2-(8v)^2 so from here we can see that there's no need to multiply and simplify... just use difference of binom formula : a^2-b^2 =(a+b)(a-b) \[\LARGE a^2-b^2=(a-b)(a+b)\]

    • 2 years ago
  8. vi3tbloodxx Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    a^2−b^2=(a−b)(a+b)\ in this equation (4+v8) (4- v8) a = 4 and b = v8 4^2 - (v8)^2 gives 16 - 8 = 8

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

    @vi3tbloodxx Still don't get what you're trying to say...O_o where's "v" how come (v8)^2=8 ???

    • 2 years ago
  10. vi3tbloodxx Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    the v stands for the square root of 8. When squaring a square root the result is the number inside of the square root.

    • 2 years ago
  11. vi3tbloodxx Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    v cannot be a variable due to the fact that variables stands behind the number. Also from the poster previous post, she been using "v" as a square root notation.

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

    hold on... is \[\LARGE v8=\sqrt8\] or \[\LARGE v8=v8\] ?? "v" is a square root or just a letter?? !

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

    auff... not your fault , I misunderstood ! I apologize , you're right , the answer is 8 :(

    • 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.