1/1+z+4/z+z^2 +1
1/2z =4/2z^2 +1
1/2z=2(z^2+2)/2z^2
1/2z=z^4+2z^2
z^5/2+2z^2
=therefore it has no solution I think this is the stes i m not sure sorry i m not sure ,try asking somebody else to cuz i m not sure
 
        
             
        
        
        
Answer: 5^2 
Step-by-step explanation:
Since the base are all the same, you will add the exponents and let the exponents stay the same.
5^3  * 5^4= 5^7 * 5^-5= 5^2 
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
2(20 + 22) = 2(42) = 84 total books
 
        
             
        
        
        
Answer:
3rd one is no. the others are all yes