Answer: [tex]27a^6[/tex]
Step-by-step explanation:
The question is not clear. So, assuming that the expression you need to simplify is this one:
[tex](3a^2)^3[/tex]
You need to remember a property called "Power of a power property". This property states the following:
[tex](b^m)^n=b^{(m*n)}=b^{(mn)}[/tex]
Therefore, you need to apply the Power of a power property explained before, in order to simplify the expression provided in the exercise, multiplying the exponents inside the parentheses by the exponent outside of the parentheses. Then:
[tex](3a^2)^3=3^{(1*3)}a^{(2*3)}=3^3a^6[/tex]
Now, you must remember that:
[tex]3^3=3*3*3=27[/tex]
Finally, you get:
[tex]=27 a^6[/tex]