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Homework Help: 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

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    Science Advisor

    Yes, it's not b: because (4)(5)= 20, not 2! And what is (4)(-2)?
     
    Last edited by a moderator: 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

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    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 by a moderator: Oct 16, 2006
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