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

tmts98

I need some help with factoring quadratics.

  • one year ago
  • one year ago

  • This Question is Closed
  1. syhna
    Best Response
    You've already chosen the best response.
    Medals 0

    use the quadratic formula

    • one year ago
  2. tmts98
    Best Response
    You've already chosen the best response.
    Medals 0

    I was looking over my notes for my midterm in Algebra II, and I think I copied down this wrong. It says if my original equation is -x²+14x+40 my factored equation would be -1(x+10)(x+4), I foiled this out because it looked wrong and I got positive x²+14+40. What do I have wrong?

    • one year ago
  3. tmts98
    Best Response
    You've already chosen the best response.
    Medals 0

    *this down by the way...

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

    -(x^2 - 14 - 40) now factor x^2 - 14 - 40 using either the quadratic formula of completing the square

    • one year ago
  5. tmts98
    Best Response
    You've already chosen the best response.
    Medals 0

    Well, I used the quadratic formula and I got: \[x=7\pm3\sqrt{2}\] Is this right?

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

    to check if your answer is correct, plug the number(s) back into your original expression. if the answer you get is 0, then you have found the correct roots

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

    because the whole point of factoring is to find what x values make f(x) = 0

    • one year ago
  8. tmts98
    Best Response
    You've already chosen the best response.
    Medals 0

    Well, now I am just more confused then when I started,.

    • 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.