Answer:
15m
Step-by-step explanation:
2m²-m+4m+8m
2m•2m-m+4m+8m
4m-m+4m+8m
3m+12m
2m^2-m+4m^2+8m combine like terms
6m^2+7m
wth
I think its Symmetric Property.
I do not understand what to do
it's just a blank black screen
