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