Simplify using long division. (remember to show all your work.)

.        8x²+20x
.                             first, try to solve the first one... 
x-3 ) 8x³ - 4x² -36x -72                      so mult x AND -3 by 8x²
.       8x³ -24x²                                     (remember it is substract not add)
      
.                20x²-36x-72                   Now try to solve the first one again..
.                20x²-60x

                          24x-72                  Now it is simplified

24x=72
x=3      answer is 3 

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