Question

one of the factors of x^4 +4 is​

Answer 1

Rewrite

x^4 +4

x^4 = (x^2)^2

and 4 =(2)^2

= (x^2)^2 + (2)^2

a^2 + b^2

= (a+b) (a-b)

a = x^2

b = 2

==>> (x^2 +2)(x^2-2)