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Evaluate: int(x-3)/(x^2+2x-4)\ dx...

Evaluate: `int(x-3)/(x^2+2x-4)\ dx`

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I= `int(x-3)/(x^2+2x-4)\ dx`
`=∫(1/2 ​(2x+2)/(x^2+2x−4​)−4/(x^2+2x−4​)dx`
=`1/2​ln∣x^2+2x−4∣-int4/(x^2+2x−4​)dx`
=`1/2​ln∣x^2+2x−4∣-int4/((x+1)^2-5​)dx`
=`1/2​ln∣x^2+2x−4∣-4/(2sqrt(5))​​ln(x+1-sqrt(5))/( ​x+1+sqrt(5))`
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