SOLUTION: Which of the following is NOT a factor of (x^4-x^3-7x^2+x+6)? A. x-1? B. x-2 C. x+1 D. x+2 thank you.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Which of the following is NOT a factor of (x^4-x^3-7x^2+x+6)? A. x-1? B. x-2 C. x+1 D. x+2 thank you.      Log On


   

Question 1004383: Which of the following is NOT a factor of (x^4-x^3-7x^2+x+6)?
A. x-1? B. x-2 C. x+1 D. x+2
thank you.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
by synthetic division, x-2 or B doesn't work
check with f(2)=16-8-28-2+6= -14
f(-2)=16+8-28-2+6=0 for comparison