a4+4 এর উৎপাদক কি কি?
A
(a2+2a+2)(a2+2a-2)
B
(a2+2a+2)(a2-2a+2)
C
(a2-2a+2)(a2+2a-2)
D
(a2-2a-2)(a2-2a+2)
Correct Answer: (a2+2a+2)(a2-2a+2)