Answer:
7m² - 5m + 8 + 3/(m+3)
Step-by-step explanation:
7m³+16m²-7m+27
(7m³+21m²-5m²-15m+8m+24+3)/(m+3)
[7m²(m+3) - 5m(m+3) + 8(m+3) + 3]/(m+3)
7m² - 5m + 8 + 3/(m+3)
 
        
                    
             
        
        
        
The hypotenuse of the triangle is given by:
 
 Substituting values: 

 Clearing CB we have: 

 Then, the perimeter of the triangle is: 

 Substituting values: 
 Answer: the perimeter of triangle BRC in units is: D.6 + 2√5
 Answer: the perimeter of triangle BRC in units is: D.6 + 2√5