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Math Help - Solve

  1. #1
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    Solve

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    Last edited by Insignia21; July 1st 2009 at 06:14 AM.
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  2. #2
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by Insignia21 View Post
    If f(x)=3x^2 -5 and g(x)=x-6 find (f+g)(-2)
    This is the same as saying evaluate f\!\left(-2\right)+g\!\left(-2\right)

    Simply evaluate both of your functions at -2 and add the results together.

    Can you try to take it from here?
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  3. #3
    Super Member dhiab's Avatar
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    Quote Originally Posted by Insignia21 View Post
    If f(x)=3x^2 -5 and g(x)=x-6 find (f+g)(-2)
    Hello :



    coclusion :
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  4. #4
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    Quote Originally Posted by Insignia21 View Post
    If f(x)=3x^2 -5 and g(x)=x-6 find (f+g)(-2)
    (f + g)(x) = f(x) + g(x)

     = 3x^2 - 5 + x - 6

     = 3x^2 + x - 11


    (f + g)(-2) = 3(-2)^2 - 2 - 11

     = 12 - 13

     = -1
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