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

ahoymewmew Group Title

the trinomial 10x2 + 11x + 3 is prime?

  • one year ago
  • one year ago

  • This Question is Closed
  1. sauravshakya Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    can u factor 10x2 + 11x + 3

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

    I dont get it. How can a trinomial be a prime?

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

    @siddhantsharan its like a true or false answer, i guess its false.

    • one year ago
  4. sauravshakya Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    If u cannot factor it then it is prime

    • one year ago
  5. sauravshakya Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    And Yes it is prime as it cannot be factored

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

    \[10x^2 + 5x + 6x +3 = 5x(2x+1) + 3(2x+1)=(5x+3)(2x+1)\] I guess what they are asking is whether it can ever YIELD a prime.

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

    oh factors always confuse me i never seem to understand them. @sauravshakya & @siddhantsharan

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

    In the sense for different value of x can the operation give a prime. If thats the case then, For a prime, one term must be 1. => Case 1. 2x + 1 = 1 => x = 0 In this case we get a three. Which is prime. So I dunno. The question is a bit ambigous I guess. As only numbers can be primes or composites. @sauravshakya It can be factored.

    • one year ago
  9. ahoymewmew Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    could you like help me how to factor something like this 4x2 + 24x + 11?

    • one year ago
  10. ahoymewmew Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    then it tells you which one of these is part of the factored answer. (2x + 1) (2x - 11) (2x + 6) prime.

    • one year ago
  11. siddhantsharan Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Yeah. The trick is: Check the product of the constant term and the coefficient of x^2. Here it is 44. Then think of such factors of 44 which add up to 24. Here they are 2 and 22. So now you write it as: \[4x^2 + 2x+22x+11=2x(2x+1)+11(2x+1) = (2x+11)(x+1)\]

    • one year ago
  12. ahoymewmew Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so for something like 9x2 - 18xy + 5y2 you look at 9x^2 first and get 81 then think of factors of 81? @siddhantsharan

    • one year ago
  13. sauravshakya Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    Oh ya @siddhantsharan it can be factored... THUS,10x2 + 11x + 3 is not a prime

    • one year ago
  14. sauravshakya Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    Because prime numbers cannot be factored

    • one year ago
  15. sauravshakya Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    Here 10x2 + 11x + 3 is a number

    • one year ago
  16. sauravshakya Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    And x is constant

    • 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.