How do you solve this problem as quickly as possible? I spent too much time doing this problem. What's the time-efficient way? Thanks.
(2^2 -1)(2^2 +1)(2^4+1)(2^8+1) =
a) 2^16 -1
b) 2^16 +1
c) 2^32 -1
d) 2^128 -1
e) 2^16(2^16 -1)
(2^2 -1)(2^2 +1)(2^4+1)(2^8+1) =
a) 2^16 -1
b) 2^16 +1
c) 2^32 -1
d) 2^128 -1
e) 2^16(2^16 -1)
