x4+x2+1 এর উৎপাদক কোনটি?
A
(x2+x+1)(x2+x-1)
B
(x2-x+1)(x2+x-1)
C
(x2+x+1)(x2-x+1)
D
(x2+x+1)(x2+x+1)
Correct Answer: (x2+x+1)(x2-x+1)