SOLUTION: Find all numbers for which x - 1 / x^2-2x -15 is defined

Question 156468: Find all numbers for which x - 1 / x^2-2x -15 is defined
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
The only way for to be UNdefined is for the denominator to be zero, so solve and your original rational function will be undefined for the two roots you obtain. The original rational function is then defined for all real numbers EXCEPT those two roots.