Answer:
[tex]-\frac{24m^5p^5}{n}[/tex]
Step-by-step explanation:
[tex]\left(12mn\right)\left(-m^3n^{-2}p^5\right)\left(2m\right)[/tex]
[tex]-12mnm^3n^{-2}p^5\cdot \:2m[/tex]
[tex]12\cdot \:2m^3mmn\frac{1}{n^2}p^5[/tex]
[tex]-\frac{1\cdot \:12mnm^3p^5\cdot \:2m}{n^2}[/tex]
[tex]-\frac{24m^5np^5}{n^2}[/tex]
[tex]-\frac{24m^5p^5}{n}[/tex]