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-(21 + 20*x)/(50*(8 + 5*x)^2)

Integrate[(2*x + 1)/(5*x + 8)^3, x] ==
-(21 + 20*x)/(50*(8 + 5*x)^2) 

           2 x + 1
Integrate[----------, x] == 
                   3
          (5 x + 8)

-(21 + 20 x)
-------------
            2
50 (8 + 5 x)
Time to compute: < 0.01 second
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