Algebra Examples

Solve to find the value of that makes the expression undefined.
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Set up the equation to solve for .
Add to both sides of the equation.
For asymptotes and point discontinuity (denominator equals ), it is easier to find where the expression is undefined. These values are not part of the domain.
The domain is all values of that make the expression defined.
The range is the set of all valid values. Use the graph to find the range.
Determine the domain and range.
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