Precalculus Examples

,
Replace the function designators with the actual functions in .
Set the denominator in equal to to find where the expression is undefined.
Divide each term by and simplify.
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Divide each term in by .
Reduce the expression by cancelling the common factors.
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Cancel the common factor.
Divide by .
Divide by .
The domain is all values of that make the expression defined.
Interval Notation:
Set-Builder Notation:
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