Can u send the photo of the square?
        
             
        
        
        
Answer:
m-1
Step-by-step explanation:
 
        
             
        
        
        
It could be solved by analyzing the questions and finding important words that stand out to you. 20=16+4 , 50=10+40. this is the way you find it
        
             
        
        
        
Need a little bit more information to be able to answer the question