Polynomials: How to find if x-2 is factor of x^3-3x^2-4x+12

[gr12ca]

I dont understand how to determine if (x-2) is a factor of the function f(x)=x^3 - 3x^2 - 4x + 12.

I'm lost so any help would be appreciated. thx

 

[galactus]

Just divide. If it reduces to a quadratic, it's a factor.

 

[Deleted member 4993]

Re: Polynomial Funtions

Hi,

i dont understand how to determine if (x-2) is a factor of the function f(x)=x^3 - 3x^2 - 4x + 12.

im lost so any help would be appreciated. thx

Iff (x-a) is a factor of f(x), then f(a) = 0

 

[stapel]

Re: Polynomials: How to find if x-2 is factor of x^3-3x^2-4x

I dont understand how to determine if (x-2) is a factor of the function f(x)=x^3 - 3x^2 - 4x + 12.

You can use long polynomial division, synthetic division, or (which is the same thing as synthetic division) evaluation (as was pointed out in Subhotosh Khan's reply).

Which method was covered in class? How far did you get? Where are you stuck? :?:

Please be complete in your reply. Thank you!

Eliz.

:arrow: P.S. Welcome to FreeMathHelp!