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Evaluate: int(3-4x-x^2)/((x+2)(x-1))dx...

Evaluate: `int(3-4x-x^2)/((x+2)(x-1))dx`

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`I=int (3+4x-x^2)/((x+1)(x-1))dx`
`I=int (3+4x-x^2)/(x^2+x-2)dx`
`I=int -1+(5x+1)/(x^2+x-2)dx`
`I=- int dx+int (5x+1)/(x^2+x-2)dx`
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