Answer:
Step-by-step explanation:
The answer is: " 9a² + 7a " .
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Note: (3a)² + 7a = (3a)*(3a) + 7a = 9a² + 7a .
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It would be 24.6 ×24.6
it's 605.16
A is not commutative with the above expression
your answer is A
Answer:

Step-by-step explanation:

