Because it is closer to 0 and -1
        
             
        
        
        
Answer:

Step-by-step explanation:
Given

Required
Write in Standard Form
To start with; the two monomials have to be multiplied together;


Split the numerator and the denominator

Multiply Like terms

Divide 9 by 3 to give 3

Divide n³ by n to n²

Split fraction

From laws of indices;

 becomes
 becomes

Multiply all together

 
        
             
        
        
        
1. 55
2. N/A - Sorry. I can’t see the numbers properly. 
3. 180