$\"\"$

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The integral is $\"\"$ .

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Multiply and divide with $\"\"$ under the root.

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$\"\"$

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Evaluate the integral $\"\"$ by using substitution method.

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Let $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Substitute $\"\"$ in above expression.

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$\"\"$

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$\"\"$

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$\"\"$ .