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

fluffyunicorn Group Title

how do i factor y=0.05x^2-x+1

  • 2 years ago
  • 2 years ago

  • This Question is Open
  1. satellite73 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    you cannot, at least you cannot using rational numbers

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

    how do you solve it with quadratic formula? i dont think my answer was right?

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

    \[y=0.05x^2-x+1 \] \[\begin{array}{*{20}c} {x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}} & {{\rm{when}}} & {ax^2 + bx + c = 0} \\ \end{array} \]

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

    in this case a=0.05 b=-1 c=1

    • 2 years ago
  5. satellite73 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    if it was me, i would multiply everything by 20 and write \[x^2-20x+20=0\]

    • 2 years ago
  6. satellite73 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    makes life a lot easier to deal with whole numbers instead of decimals

    • 2 years ago
  7. Monkeyball Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so I did it wrong?

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

    i know the formula but after i did it it looked wrong i got 1+-(sr).8/.1

    • 2 years ago
  9. satellite73 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    no it is just easier if it is not clear where i got the 20 from, lets clear the decimal by multiplying everything by 100 you get \[5x^2-100x+100=0\] then divide by 5 and get \[x^2-20x+20=0\]

    • 2 years ago
  10. satellite73 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    you really do not want to take square roots of decimals or divide by decimals use whole numbers

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

    alright thank you!

    • 2 years ago
  12. satellite73 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    for \[x^2-20x+20=0\] it is probably easiest to complete the square because 20 is even i would write \[x^2-20x+20=0\] \[x^2-20x=-20\] \[(x-10)^2=-20+100=80\] \[x-10=\pm\sqrt{80}=4\sqrt{5}\] \[x=10\pm4\sqrt{5}\]

    • 2 years ago
  13. fluffyunicorn Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    And its not factorable right?

    • 2 years 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.