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intxsqrt(1+x-x^(2))dx...

`intxsqrt(1+x-x^(2))dx`

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The correct Answer is:
`(-1)/(3)(1+x+x^(2))^((3)/(2))+(2x-1)/(8)sqrt(1+x+x^(2))+(5)/(16)sin^(-1)((2x-1)/(sqrt(5)))+C`
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