Algebra 2: Divide using polynomial long division?

Question

I can't do this problem. 

(7x^3 + 11x^2 + 7x + 5) / (x^2 + 1)

Answer 1

       Divide the polynomial using long division method

       Step: 1

 

      

        Step: 2

 

     

    Step: 3

     

     The solution is