Answer:
Difference of squares:
y^4−25 
16x^2−81
Not difference of squares:
20m^2n^2−121 
p^8−q^5 
Step-by-step explanation:
y^4−25 
(y²)² - 5²
16x^2−81
(4x)² - 9²
20m^2n^2−121 
20 is not a perfect square 
p^8−q^5 
q⁵ is not a perfect square 
 
        
             
        
        
        
Answer:
1/9 quart in each glass
Step-by-step explanation:
2/3) / 6
(2/3) * (1/6) = 2/18 = 1/9 quart in each glass
 
        
             
        
        
        
The answer is a right triangle meaning that all sides and angles are equal.