Best Answer

If a is an integer then 4 divides 4a2 so it cannot be a prime.

If a = 0 then 4a2 = 0 and cannot be simplified further

If a = 1 then 4a2 = 4 = 2*2

If a is an integer > 1, then 4a2 = 2*2*a*a

If a is not an integer, then there are too many possible options for the answer.

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Q: Can you simplify 4a2 or is it already simplified because it's PRIME?
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