Question

Which of the following is a factor of 100x2 - 100?
a) x - 1
b) 10x + 1
C) x - 10
D)x - 5

Answer 1

the answwe is c  X - 10 

Answer 2

answer is a) x - 1

100x2 - 100
= 100 (x^2 - 1)
= 100 (x+1)(x-1)