Answer:
[tex]=\frac{m^{10}n^7}{p^7}[/tex]
Step-by-step explanation:
[tex](m^3np^-^3)^3(mn^4p^2)\\\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=\left(m^3np^{-3}\right)^3mn^4p^2\\\\\left(m^3np^{-3}\right)^3\quad :\quad m^9n^3p^{-9}\\\\=m^9n^3p^{-9}mn^4p^2\\\\\mathrm{Apply\:exponent\:rule}:\quad \:a^b\times\:a^c=a^{b+c}\\\\m^9m=\:m^{9+1}\\\\=n^3p^{-9}m^{9+1}n^4p^2\\n^3n^4=\:n^{3+4}\\\\=n^3p^{-9}m^{10}n^4p^2\\\\\mathrm{Apply\:exponent\:rule}:\quad \:a^b\times\:a^c=a^{b+c}\\=p^{-9}m^{10}n^{3+4}p^2\\\\=p^{-9}m^{10}n^7p^2\\\\=m^{10}n^7p^{-9+2}[/tex]
[tex]=m^{10}n^7p^{-7}\\\\=m^{10}n^7\frac{1}{p^7}\\\\\frac{1\times\:m^{10}n^7}{p^7}\\\\=\frac{m^{10}n^7}{p^7}[/tex]
