This a Term 4(3m^3)^2 which you want to simplify
You need to two different ideas to simplify this term
1. The Order of Operations (PEMDAS)
2. Laws of Exponents
So first lets use the order of operations. So lets first use the outside exponent which after the paratheses. Since the exponent is outside the parentheses it applies both to the 3 and to m^3. 3^2 = 9 and (m^3)^2 = m^6. Because one of the rules of exponents says if you have power raised to another power you multiply the powers. Then the final step is multiplication. So now multiply 4 * 9 * m^6 and you get 36m^6.
If you want an explanation of the laws of exponents or PEMDAS in more depth just ask.
Or any other math help any level I would love to help.