If you take the square root of a number squared number then they cancel each other out and the number stays the same i.e. √[(4)^2] would equal 4.
In this problem the square root and numbered squared cancel out to leave the problem as -2a.
The solution of this problem is -2a
        
             
        
        
        
Answer:(:
Step-by-step explanation:
Organic food production is usually more labour and management intensive and happens on a smaller scale ie on smaller farms which lack the benefit of economy of scale. 
 
        
             
        
        
        
Answer:
C) 1/5
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
x = 21
eliminate the denominator of 4
you can do this buy multiplying both sides by 4 
x -9 = 12
x = 21