Answer:
square: (9x^8)^2= 81x^16
square root: (9x^8)^1/2 = 3x^4
Step-by-step explanation:
the ^ mean that the following num should be like this ⁸
 
        
             
        
        
        
For 15 the answer is 8
for 16 the answer is 9
for 17 the answer is 1
        
             
        
        
        
Answer:
-7
Step-by-step explanation:
-20  × -7 = 140
140 × -7 = -980
 
        
             
        
        
        
2nd one is the correct one I think
        
                    
             
        
        
        
Answer:
14 :)
Step-by-step explanation: