Question

I.
Which two of the following can be factorised with integral coefficients ?
x^4 + x^2 + 1
II. X^4 + 2x + 2
III. X^4 - 2x^2 + 1
IV. X^4 = x + 1
(A) I and II
(B) I and IV
(C) II and III
- 6 + 6 + 1
(D) I and II​

Answer 1

Answer:

(B)and[C] is are can be factorised with integral co efficients