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Evaluate: int(x+1)/((x-1)sqrt(x+2))\ dx...

Evaluate: `int(x+1)/((x-1)sqrt(x+2))\ dx`

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`=int(x+1)/((x-1)sqrt(x+2))\ dx`

`=int(x-1+2)/((x-1)sqrt(x+2))\ dx`

`=int[(1)/(sqrt(x+2))+(2)/((x-1)sqrt(x+2))]\ dx`

`=2sqrt(x+2)+2int(1)/((x-1)sqrt(x+2))\ dx`

Let,

`x+2=t^2`

`dx=2tdt`

`x-1=t^2-3`

...
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