Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

allea_marie

  • 2 years ago

How do you solve 5x² - 20x² (GCF)

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

    GCF means?

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

    -15x^2

  3. CheetahBooks1
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    GCF means Greatest Common Factor.

  4. CheetahBooks1
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Am I right?

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

    @allea_marie reply pls

  6. CheetahBooks1
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Hello?

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

    There needs to be more here, for there to be something to solve.

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

    Yes it stands for Greatest Common Factor

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

    so what are the two numbers that you want to find the greatest common factor of?

  10. CheetahBooks1
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    But why do you need GCF to solve this? It is quite simple. Just subtract 5-20 and carry over the x^2. That would be -15x^2

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

    Okay thanks, how would you solve 2x² - 21x=54

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

    that one can be solved by factorising the polynomial.

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

    \[ 2x^2 - 21x =54 \] \[2x^2 - 21x - 54 = 0 \] Now you want to solve: \[(2x + a)(x +b) = 2x^2 - 21x - 54 \] Note that you must have \[ a*b = -54 \]

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

    this won't always work so easily. But I can see here that it does.

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

    Okay thank you

  16. 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.