simplify the expressions

[tex]\huge\color{black}\tt{Answer :} \\ \\ 3n {}^{10} [/tex]
Step-by-step explanation:
[tex] \frac{15n {}^{12} }{5n {}^{2} } \\ \\ reduce \: the \: fraction \: with \: 5 \\ \\ \frac{3n {}^{12} }{n {}^{2} } \\ \\ simplify \: the \: expression\\ 3n {}^{10} \\ \\ \large\red {{ 3n {}^{10} }}[/tex]