Question

What is the factored form of the expression?

s4 – 16
A. (s - 2)2(s + 2)2


B. (s - 2)(s + 2)


C. (s - i)(s + i)(s - 2)(s + 2)

D. (s^2 + 4)(s + 2)(s - 2

Answer 1

Do you mean
\[x^4 - 16 ?\]

If yes
Write them like this

\[(x^2)^2 - (2^2)^2\]

OR

\[(x^2)^2 - 4^2\]

Now use the identities that I posted in the previous question.

Okay? :)