For which positive integers n (if any) is x+a a factor of x^n-a^n? Assume a does not equal 0.
G Guest Guest Nov 6, 2005 #1 For which positive integers n (if any) is x+a a factor of x^n-a^n? Assume a does not equal 0.
G Gene Senior Member Joined Oct 8, 2003 Messages 1,904 Nov 7, 2005 #2 If x+a is a factor then x=-a is a zero. (-a)^n-a^n=0 is true for all even n
