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If i have (5*x^3-3*x^2+3*x-2)/(x+1) and i got 5x2-8x-5-(7/x-1), what did I do wrong?

 

*I got this on a test and my teacher says im wrong, but I dont see how...

Guest Jan 23, 2018
 #1
avatar+87639 
+1

 (5*x^3-3*x^2+3*x-2)/(x+1) 

 

               5x^2      -8x        + 11

x + 1   [   5x^3     - 3x^2       +3x     - 2  ] 

               5x^3     +5x^2

              __________________________ 

                           -8x^2      +3x 

                           -8x^2      -8x 

                        _____________________

                                          11x       - 2

                                          11x      +11

                                          __________

                                                      -13

 

So....  the result  is  

 

5x^2  - 8x  + 11   R   ( -13 ) / (x + 1)

 

 

 

cool cool cool

CPhill  Jan 23, 2018

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