$\"\"$

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The function is $\"\"$ , $\"\"$ .

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The domain of a function is all possible values of $\"\"$ .

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The denominator of the function should not be zero.

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The value in the square root cannot be negative.

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$\"\"$ and $\"\"$

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$\"\"$ and $\"\"$ .

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The domain of the function is $\"\"$ . $\"\"$

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The function $\"\"$ is continuous for $\"\"$ .

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If the function $\"\"$ is continuous at $\"\"$ , then $\"\"$ .

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$\"\"$ .

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Rationalize the numerator.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Cancel common terms.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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$\"\"$ .

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$\"\"$

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The domain of the function is $\"\"$ .

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$\"\"$ .