Answer:
1.
[tex]{b}^{8} [/tex]
2.
[tex] {m}^{9} {n}^{12} [/tex]
3.
[tex] - 20 {x}^{5} {y}^{6} {z}^{7} [/tex]
sorry gtg i cant answer 4,5 cuz i need to go
