A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

ashlynxo

  • one year ago

Use the discriminant to find the number of real solutions of the equation 3x^2 – 5x + 4 = 0. Show your work.

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I forgot what is discriminant of a quadratic. Do you remember?

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

    Well, the textbook definition is "the discriminant is the expression under the radical sign in the quadratic formula."

  3. johnweldon1993
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    From the quadratic formula.. \[\large \frac{-b \pm \color\red{\sqrt{b^2 - 4ac}}}{2a}\] The red is your descriminant

  4. johnweldon1993
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So from your equation \[\large 3x^2-5x + 4 = 0\] A,B and C are the coefficients of the quadratic 3 = A -5 = B 4 = C so we plug those into the discriminant and what do we get?

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

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.