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sqrt((x + 1)^(2)- 4 )...

`sqrt((x + 1)^(2)- 4 )`

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The correct Answer is:
`I = (x + 1)/(2) sqrt((x + 1)^(2) - 4) - 2 log | x + 1 + sqrt((x + 1)^(2)- 4 )|+ c `
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