Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

aama100

  • 3 years ago

(x-8)^2=36 find exact and approximate solutions to three decimal places. a) solve 8x+x(x-6)=0 b) find the x-intercepts of f(x)=8x+x(x-6) a)what are the solution x=? c) what are the x-intercepts

  • This Question is Closed
  1. imranmeah91
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    8x+x(x-6) or (x-8)^2=36 ?

  2. aama100
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    a) (x-8)^2=36 find exact and approximate solutions to three decimal places. b) solve 8x+x(x-6)=0 c) find the x-intercepts of f(x)=8x+x(x-6) 1)what are the solution x=?

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

    a) take square root of both sides: x-8=pm 6 pm means plus or minus then add 8 on both sides

  4. saljudieh07
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    x^2-16X+64=36 X^2-16X+28=0 Then, just find it using the quadratic formula, so the answers will be: (16+/-12)/2= 14 or 2 Myiniaya i think that way is incorrect because you are cancelling one of the roots, and you need all the answers

  5. polpak
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    She said \(\pm 6\) which is not cancelling one of the roots.

  6. polpak
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[(x-8)^2 = 36\]\[\implies x-8 = \pm6\]\[\implies x = 8\pm 6\]\[\implies x \in \{2,14\}\]

  7. saljudieh07
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    for b) you have (8x+x)(x-6)=0 expand: 8x^2-48x+x^2-6x=0 simplify: 9x^2-54x=0 x=0 OR x= 5 and polpak, sorry didnt pay attention to the pm, so pm is +/-, and yes that would be correct!

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

    • 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.