(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)
Answer : (b) (a2+2a+2)(a2-2a+2)
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(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)
Answer : (b) (a2+2a+2)(a2-2a+2)