Divide these polynomials.

(9x3 + 9x2 + 5x + 1) (3x + 1)

A. 3x2 + 2x + 1
B. 3x2 + 2x - 2
C. 3x2 - 3x - 1
D. 3x2 + 3x + 1

Question

Divide these polynomials. 

(9x3 + 9x2 + 5x + 1)  (3x + 1)

   A. 3x2 + 2x + 1 
   B. 3x2 + 2x - 2 
   C. 3x2 - 3x - 1 
   D. 3x2 + 3x + 1

anonymous · Answer

Do long div.
            3x^2 + 2x    +  1
         ________________________
3x+1 ) 9x^3 + 9x^2 + 5x +1
         - 9x^3 + 3x^2
         --------------
                        6x^2 + 5x
                     - 6x^2 + 2x
                      -----------
                                    3x + 1
                                  - 3x + 1
                                 ---------
                                             0

Answer 3x^2 + 2x + 1