Question

If f(x)=(x8)2
, what is f(−4)
?(1 point)
f(−4)=

Answer 1

I’m not sure how to read (x8)2 — do you mean one of these?

- f(x) = (x + 8)^2 → f(−4) = (−4 + 8)^2 = 4^2 = 16
- f(x) = (x − 8)^2 → f(−4) = (−4 − 8)^2 = (−12)^2 = 144
- f(x) = (8x)^2 → f(−4) = (8·(−4))^2 = (−32)^2 = 1024
- f(x) = (x/8)^2 → f(−4) = (−4/8)^2 = (−1/2)^2 = 1/4
- f(x) = (x^8)^2 = x^16 → f(−4) = (−4)^16 = 4,294,967,296

If you confirm which form you meant, I’ll give the single correct value. If it was (x + 8)^2, then f(−4) = 16.