Answer:
Step-by-step explanation:
Two properties used are: [tex](a*b)^{m} = a^{m}*b^{m}\\[/tex] and [tex](a^{m})^{n}=a^{m*n}[/tex]
[tex](6a^{4})^{3}=6^{3}*(a^{4})^{3} = 216a^{4*3} = 216a^{12}[/tex]