A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

some.random.cool.kid

  • one year ago

Solve x2 − 5x + 1 = 0 using the quadratic formula.

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

    step one is to -1 by both sides?

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

    now just use the quadraitc formula

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

    no**

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

    you already know the formula so just plugin a ,b ,c values

  5. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah but first -1 to the 1 and 0 go first dont they i have to simplify them.

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

    comparing your equation with the general quadratic equation: \[a{x^2} + bx + c = 0\] we get: a=1, b=-5, and c=1 now, please apply this formula: \[x = \frac{{ - b \pm \sqrt {{b^2} - 4 \times a \times c} }}{{2 \times a}}\]

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

    no quadratic equation should be in standard form \[\huge\rm Ax^2+Bx+C=0\] equal to zero

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

    that was for completing the square method but when we use quadratic formula we ned `standard form`

  9. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

  10. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so what is the standard is it like ... idk actually

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

    \(\color{blue}{\text{Originally Posted by}}\) @Nnesha no quadratic equation should be in standard form \[\huge\rm Ax^2+Bx+C=0\] equal to zero \(\color{blue}{\text{End of Quote}}\) ^^that's the standard form

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

    where a=leading coefficient b=middle term c=constant term

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

    now just plugin a ,b, c values into the quadratic formula

  14. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

  15. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    writing all these down just in case your wondering... very helpful info for big exam EOC..

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

    that's Awesome take ur time write theses down and practice as much as u can

  17. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    k so what do i next because i wasn't sure...

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

    did you substitute a ,b c for their values ?

  19. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    a is x^2 right ?

  20. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and b is 5x?

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

    no just the coefficient not the variable

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

    look at the Michele'z comment a=1 bec x^2 is same as 1x^2

  23. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so 5 since its not a variable?

  24. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    /so your saying 1^2? i dont get how thats possible...

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

    yes 5 is b

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

    there is invisible one at front of x^2 x^2 is same as 1x^2 so leading coefficient is one

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

    i'm not saying x =1 leading coefficient is one

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

    \[\huge\rm \color{red}{1}x^2+\color{blue}{5}x+\color{green}{1}=0\] \[\huge\rm \color{ReD}{A}x^2+\color{blue}{B}x+\color{green}{C}=0\]

  29. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    alright

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

    oky now just plugin

  31. some.random.cool.kid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    k thanks i gtg thanks for your help. :D

  32. 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.