A (a+b)
B (a-b)
C (a+b)(a-b)
D (a2-1)
Correct Answer: Option A
১ম রাশি= a2-b2 =(a+b)(a-b)
২য় রাশি= a3+b3 =(a+b)(a2-ab+b2)
নির্ণেয় গ.সা.গু.=(a+b)
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