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Homework Help: Need help with this function question

  1. Sep 22, 2011 #1
    1. The problem statement, all variables and given/known data

    evaluate f(x+h) expand and simplfy f(x)=x^3-7x^2+x+1?


    2. Relevant equations
    f(x+h)


    3. The attempt at a solution
    my attempt (f(x+h)+f(x)+1
    x^2(x+h)+x+1
    x^2(x+7)+x1
    im lost I'm not sure how to do this
     
  2. jcsd
  3. Sep 22, 2011 #2

    LCKurtz

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    Replace the x's with x+h and simplify.
     
  4. Sep 22, 2011 #3
    o really so is it like

    f(x)=(x+h)^3-7(x+h)^2+(x+h)+1
    then I simplify
     
  5. Sep 22, 2011 #4

    LCKurtz

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    Yes.


    No you won't. There is more to it than that, and that's not what psp101 asked anyway.
     
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