Question

completely factor x^4-1

Answer 1

is it (x^2-1)(x^2+1) ?

Answer 2

(x^2+1)(x+1)(x-1)

Answer 3

yea u further simplify (x^2-1) to (x+1)(x-1)

Answer 4

ooohhhkay

Answer 5

but then wouldnt it be (x+1)(x+1)(x-1)(x-1) ?

Answer 6

i mean (x+1)(x+1)(x-1)(x+1)

Answer 7

no, x^2+1 is not same as (x+1)^2

Answer 8

THE OPTIONS ARE
a) (x^2+1)(x^2-1)
b) (x+1)^2(x-1)^2
c) (x^2+1)(x-1)(x+1)
d) (x+1)(x+1)(x-1)(x+1)