1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Pre Cal Help For Silly Girlie

  1. Oct 15, 2006 #1
    Write 4x^2(–2x^2 + 5x^3) in standard form. Then classify it by degree and number of terms.
    a.
    2x + 9x^4; quintic binomial

    b.
    20x^5 – 8x^4; quintic binomial

    c.
    2x^5 – 8x^4; quintic trinomial

    d.
    20x^5 – 10x^4; quartic binomial

    if someone could help me change it to standard form asap that would be super:rolleyes:
    thanks!!!!
     
    Last edited: Oct 15, 2006
  2. jcsd
  3. Oct 15, 2006 #2
    why isnt it b? multiply it out.
     
  4. Oct 15, 2006 #3
    okay ill try again
    i just keep getting different answers
     
  5. Oct 15, 2006 #4

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    Yes, it's not b: because (4)(5)= 20, not 2! And what is (4)(-2)?
     
    Last edited: Oct 15, 2006
  6. Oct 15, 2006 #5
    thanks for the tips
    this is my first time posting and ill try to make things easier to read
    ill also try not to give up
     
  7. Oct 15, 2006 #6
    quintic binomial =]
     
  8. Oct 15, 2006 #7

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    Are you sure you've copied the answers correctly? "-8x^4" would make a whole lot more sense than "-8^4"!!

    (You edited to make it clearer. Did the 'x' disappear when you did that?)
     
    Last edited: Oct 16, 2006
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?