# Find the Domain y=(x^2-4)/(2x+4)

Set the denominator in equal to to find where the expression is undefined.
Solve for .
Subtract from both sides of the equation.
Divide each term by and simplify.
Divide each term in by .
Cancel the common factor of .
Cancel the common factor.
Divide by .
Divide by .
The domain is all values of that make the expression defined.
Interval Notation:
Set-Builder Notation:
Find the Domain y=(x^2-4)/(2x+4)