Question

x^4+4 factorise.

please help me. ​

Answer 1

Answer:

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

=(x^2+2)^2

After you can solve

Answer 2

Answer:

(x^2)^2+2^2

using identity a^2+b^2= (a+b)^2-2ab

(x^2+2)^2 - 2x^2×2

(x^2+2)^2-4x^2