Question

Which of the following expressions is a factor of
y^7 - 128
A) y - 1
B) y-3
C) y-2
D) y+3

Answer 1

http://openstudy.com/study#/updates/4f6f74fbe4b0772daa0918bf

Answer 2

well 2^7 = 128

so perhaps y - 2

becuase P(y) = y^7 - 128
P(2) = 2^7 - 128
= 0

using the factor theorem