Question

factor x^4-256

Answer 1

note that 256 = 4^4
and x^4 = (x^2)^2

Answer 2

hmmm ok and so if i do (x^2)^2- 4^4 i should be able to work out the answer. it saya factor completly idk if that changes anything.

Answer 3

(x^2-16)(x^2+16) you can factor more

Answer 4

(x-4)(x+4)(x-4i)(x+4i) where i=sqrt(-1)

Answer 5

i had tried that one and said i was wrong, could i try (x+4)(x-4)(x^2+16) ?

Answer 6

use the one i typed in if you have talked about imaginary numbers
use the one you just typed in if you haven't

Answer 7

ohh ok cool , thank you so much!