Question

which 3 of the following expression are factors of b^4 - 16
a) b^2
b) b^4
c) b - 4
d) b - 2
e) b + 2
f) b + 4
g)b^2 + 2
h) b^2 + 4

Answer 1

The expression b^4 - 16 can be factored as (b^2 + 4)(b^2 - 4).

Therefore, the factors of b^4 - 16 are:
a) b^2
c) b - 4
f) b + 4