Question

I need help please!!!!

Answer 1

`\left(3m^2n^4\right)^3=(3)^3(m^2)^3(n^4)^3=27m^(2\cdot3)n^(4\cdot3)=27m^6n^(12)\\\\\text{Used:}\\\\(a\cdot b)^n=a^nb^n\\\\(a^n)^m=a^(n\cdot m)`