Answer:
3x^2
Step-by-step explanation:
3x^2 can be factored out of each
-6x^2 = 3x^2(-2)
21x^3 = 3x^2(7x)
 
        
             
        
        
        
Distinct angles are when the angles of a polygon are all different.
        
             
        
        
        
I got a different answer..
and i don't see it as one of your choices, also your question is confusing since you're repeating it .-.
But anyways i got 
 
 
        
        
        
PLEASE. MARK ME AS BRAINLIEST ANSWER.