x^3+4x^2-3x-12/x^2-3

Question

i need this figured out using long division... please help

Answer 1

 

                   x - 4

                 ---------------------------                 x*x^2 = x^3

( x^2 - 3)    (x^3 - 4x^2 - 3x - 12 )

                  x^3            - 3x

                -                  +

               ----------------------------                      - 4 *x^2 = - 4x^2

                       -  4x^2      -    12

                       - 4x^2       - 12

                       +              +

                     ------------------------

                              0

the answer is    x - 4