The formulas:

Expand the expression:

Plug the values into the expression:
 
 
        
        
        
Answer:
1 = A
2 = D
3 = B
4 = C
Step-by-step explanation:
 
        
             
        
        
        
I believe its B.
Hope this helps!
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
                x^2
            --------------------------------------------------
2x + 1  /  2x^3     -     x^2    +      x      +    1
                2x^3    +    x^2
               -----------------------
                                     0 + x + 1
                                         x + 1
The quotient is  x^2 + ------------
                                        2x + 1