Answer:
13. [tex]m^{37} n^{22}[/tex]
14. [tex]-48x^{4} y^{4}[/tex]
15. [tex]8x^{17}y^{6} z^{10}[/tex]
16. [tex]16x^{38}y^{22}[/tex]
17. [tex]512m^{9} n^{3}[/tex]
18. [tex]-96x^{14} y^{2}[/tex]
19. [tex]-54m^{5} n^{4}[/tex]
20. [tex]8r^{6}s^{10}[/tex]
21. [tex]-x^{15}y^{21}[/tex]
Step-by-step explanation: