Question

factorization of x^2+1​

Answer 1

Answer:

${x}^{2} + 1$

It cannot be factoised

Answer 2

Answer: in real numbers it can't be factorized.

This answer doesn't apply if you don't know complex numbers.

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

(x+i)(x-i)