Precalculus Examples

Find the domain for .
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Set up the equation to solve for .
The domain is all values of that make the expression defined.
To find the square root end point, substitute the value , which is the least value in the domain, into to get .
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Replace the variable with in the expression.
Simplify the result.
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Remove parentheses.
Rewrite as .
Pull terms out from under the radical, assuming positive real numbers.
The final answer is .
The square root end point is .
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