# Find Where Undefined/Discontinuous (8z^3-8)/(2z-2)

Set the denominator in equal to to find where the expression is undefined.
Solve for .
Add to 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 equation is undefined where the denominator equals , the argument of a square root is less than , or the argument of a logarithm is less than or equal to .
Find Where Undefined/Discontinuous (8z^3-8)/(2z-2)