Which of the following is NOT a factor of 12\(^{4}\) – 5\(^{4}\)?
- 7
- 13
- 17
-
49
- 169
The correct answer is: D
Explanation
124 - 54 = (122)2 - (52)2
= (122 + 52) x (122 - 52)
(144 + 25)(144 - 25)
= (169)(119)
Factors of above 169, 17, 13, 7