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

happykiddo

How is this factored::::: 125x^3-27=0 using the sum or difference of cubes to find the real or imaginary solutions

  • one year ago
  • one year ago

  • This Question is Closed
  1. Mertsj
    Best Response
    You've already chosen the best response.
    Medals 1

    difference of two cubes.

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

    (5x)^3-(3)^3

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

    but what about the part where you plug it into the formula my real question is does the -3 stay negativ when plug-in her into the formula where the -b is

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

    the general form is \[a^3 - b^3 = (a -b)(a^2 + ab + b^2)\] in your question a = 5x and b = 3

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

    thanks :) i wrote the formula wrong

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

    glad to help

    • one year 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.