Which expression correctly shows x6+2x3+1 factored completely over the integers?

a) (x3+1)2
b) (x+1)2(x2−x+1)2
c) (x+1)(x2−x+1)
d) (x2+1)(x4−x2+1)

Option a.

Step-by-step explanation:

The given expression is

Splitting the middle term, it can be rewritten as

Taking out GCF fro each parenthesis.

Therefore, the correct option is a.

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the answer is a

step-by-step explanation: