Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

jayda

  • 3 years ago

Evaluate the discriminant of 25x2 + 350x + 49 = 0. Tell how many solutions the equation has and whether the solutions are real or imaginary. A. one real solution B. two imaginary solutions C. two real solutions D. cannot be determined

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

    wat u think first

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

    i honestly dont have a clue! ha

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

    oh shoot i forgot too. wats discriminant

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

    i really dont know

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

    \[x = \frac{ -b \pm \sqrt{b^{2} - 4ac} }{ 2a }\] the discriminant is \[\sqrt{b^{2} - 4ac}\] because it can be used to discriminate between solutions.

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

    oh. that's relatively simple then. Here's a hint: ax^2-bx-c=0 (minus sign is just there; it doesn't matter). works in conjunction with binarymimic's comment.

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

    The discriminant is actually a bit simpler, it's the radicand of that expression: \(b^2 - 4ac\) It is useful because the sign on it tells us whether there is a positive number or negative number under the radical. In the case of a positive, we have two real roots. In the case of a negative, we have two imaginary / complex roots. If we have 0, then we have a single root that is repeated. ((-b +- 0) / (2a))

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

    Actually, the discriminant is just \(b^2 - 4ac\).

  9. 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