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Thread: Algebra: Find f-g,if f(x)=2x^2-3x+5 and g(x)=x^2-4

  1. #1
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    Algebra: Find f-g,if f(x)=2x^2-3x+5 and g(x)=x^2-4

    Find f-g,if f(x)=2x^2-3x+5 and g(x)=x^2-4

  2. #2
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    Quote Originally Posted by T02 View Post
    Find f-g,if f(x)=2x^2-3x+5 and g(x)=x^2-4
    What are your thoughts?

    Please share your work with us ...even if you know it is wrong.

    If you are stuck at the beginning tell us and we'll start with the definitions.

    You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL:

    http://www.freemathhelp.com/forum/announcement.php?f=33
    “... mathematics is only the art of saying the same thing in different words” - B. Russell

  3. #3
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    Quote Originally Posted by T02 View Post
    Find f-g,if f(x)=2x^2-3x+5 and g(x)=x^2-4
    Come on, we help with homework, that is we do not do it for you. For that you can hire an online tutor.

    Before you can find (f-g)(x) you need to know the definition of (f-g)(x). You can't play the game unless you know the rules!

    I'll give you the definition.

    (f-g)(x) = f(x) - g(x). That is, just subtract the two functions. Can you go from here??
    A mathematician is a blind man in a dark room looking for a black cat which isn’t there. - Charles R. Darwin

  4. #4
    Elite Member stapel's Avatar
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    Cool

    Quote Originally Posted by T02 View Post
    Find f-g,if f(x)=2x^2-3x+5 and g(x)=x^2-4
    You've been given two polynomials and have been instructed to subtract and simplify. You've learned how to add and subtract polynomials and how to combine "like" terms. Please reply showing your set-up (with the two polynomials each in grouping symbols, with the "minus" sign between them), and your subtraction, specifying where you are getting stuck.

    Thank you!

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