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Answer :

Answer:

3a^2 + 12a

Step-by-step explanation:

3a x a makes the a to the second power giving you 3a^2

then 3a x 4 gives you 12a

DRAlNgo

Answer:

12a+3a²

Step-by-step explanation:

3a×4×3a×a

12a+3a×a

12a+3a²

12a+3a²

hope this works

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