Hello!
Let's multiply the terms together.
First, let's multiply the a's.
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

Step-by-step calculations:
2*3=6
a*a*a=a³
6*a³=6a³
Same with the b's:

Calculations:
b*4b
b=1b
1*4
b*b
4b²

Hope everything is clear.
Let me know if you have any questions!
#KeepOnLearning
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