Complete this statement:15a2x2 + 12a²x + 9a? - 3a?Enter the correct answer.

Explanation: Here we just need to isolate
[tex]3a^2[/tex]from each term of the right side of the equality.
Step 1: Let's calculate as follows
Final answer: So the final answer is
[tex]3a^2(5x^2+4x+3)[/tex].