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Math Help - Need help with this one

  1. #1
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    Need help with this one

    Use ther theorem to determine whether x-c is a factor of f(x).

    f(x)= x^3+4x^2-10x12; x+6
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  2. #2
    A riddle wrapped in an enigma
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    Quote Originally Posted by relichunter09 View Post
    Use ther theorem to determine whether x-c is a factor of f(x).

    f(x)= x^3+4x^2-10x12; x+6
    Hi relichunter09,

    I assume the x between 10 and 12 is supposed to be a +.

    Use the Remainder theorem to see if f(-6)=0.
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  3. #3
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    I suspect rather that the is supposed to be a "+" between the "x" and the 12. That is, that f(x)= x^3+4x^2-10x+ 12.

    relichunter09, what is f(-6)? Do you see why I asked that?
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  4. #4
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    F(x)= x^3+4x^2-10x+12; x+6 -6+6 = 0

    F(-6)= -6^3+4(-6)^2-10(-6)+12 = 0

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