Answer: 3(2a^2+1)(4a^4-2a^2+1)
Explanation:
You factor out the common factor which is 3
3(8a^6+1)
= 3((2a^2)^3 + 1^3)
then you use the a^3 + b^3 rule = (a+b)(a^2-ab+b^2)
3(2a^2+1)(4a^4-2a^2+1)
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