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(x*Sqrt[-a^2 + x^2])/2 + (a^2*Log[2*(x + Sqrt[-a^2 + x^2])])/2


Integrate[x^2/Sqrt[-a^2 + x^2], x] ==
(x*Sqrt[-a^2 + x^2])/2 + (a^2*Log[2*(x + Sqrt[-a^2 + x^2])])/2



                 2
                x
Integrate[--------------, x] == 
                 2    2
          Sqrt[-a  + x ]

         2    2     2                   2    2
x Sqrt[-a  + x ]   a  Log[2 (x + Sqrt[-a  + x ])]
---------------- + ------------------------------
       2                         2

Time to compute: 0.04 second

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