This may be a dumb question, but I'm really totally blanking on this D: So please no laughing :/

Anyway

In the following example:

My question is simply about the "3" that is the exponent of the whole parenthesis group. I know that the exponents within the parenthesis are to be multiplied and not added as typical for exponents. So you multiply the exponents by 3 BUT do you multiply the base numbers by 3 or do you square it to that 3rd exponent???

I'm so confused about that because I could of swore a teacher once told me to multiply the base number and not square it but I need to be 100% certain. Thanks and any help would be MUCH appreciated! Thanks!