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Math Help - need help to understand how to solve!

  1. #1
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    need help to understand how to solve!

    Consider the function below.g(x) = x4 - x3 + x2 - x
    Find g(-14).
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  2. #2
    fkf
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    Re: need help to understand how to solve!

    Quote Originally Posted by impressu2 View Post
    Consider the function below.g(x) = x4 - x3 + x2 - x
    Find g(-14).
    If we have defined a function to be f(x) = x^4-x^3+x^2-x then we want to find g(-14)

    f(x) = x^4-x^3+x^2-x => g(-14) = (-14)^4-(-14)^3+(-14)^2-(-14) = 41370
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  3. #3
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    Re: need help to understand how to solve!

    Thank you!
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    Junior Member PaulAdrienMauriceDirac's Avatar
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    Re: need help to understand how to solve!

    Quote Originally Posted by impressu2 View Post
    Consider the function below.g(x) = x4 - x3 + x2 - x
    Find g(-14).
    \left g(x)=x^4-x^3+x^2-x=x^3(x-1)+x(x-1)=(x-1)(x^3+x)=(-14-1)(-14^3-14)=-15(-2744-14)=41370.

    Ops, I guess I was late, but this is another "method".
    Last edited by PaulAdrienMauriceDirac; November 5th 2012 at 10:18 AM.
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