Answer:
When you factor this polynomial expression 
 you get that is equal to
 you get that is equal to 

Explanation:
- Factor 
  : :
 1.1 Apply exponent rule 
 in this term
 in this term 
 so
 so 

 1.2 Rewrite as 

 1.3 Factor out common term 5m, 

 2. Factor 
 :
 :
 2.1 Rewrite as 

 2.2 Factor out common term -3n, 

 3. Factor out common term 
 which is equal to
 which is equal to 
