Help simple I think......;)

Answer:
If m=-3 then the answer would be -2.
Step-by-step explanation:
Use the order of operations
-3²-5×-3-8
First, look at -3² which equals -9.
-9-5×-3-8
Second, look at 5×-3 which equals -15.
-9+15-8
Third, look at -9+15 which equals 6.
6-8
Lastly, do 6-8 which equals -2.