SOLUTION: Determine any values of the variable for which the expression is undefined. (x^2+9)/(2x^2-9x-5)

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Determine any values of the variable for which the expression is undefined. (x^2+9)/(2x^2-9x-5)      Log On


   

Question 290351: Determine any values of the variable for which the expression is undefined.
(x^2+9)/(2x^2-9x-5)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The expression is undefined when the denominator equals zero since divsion by zero is undefined.
You can factor the denominator.
2x%5E2-9x-5=%282x%2B1%29%28x-5%29
Two values:
2x%2B1=0
2x=-1
x=-1%2F2
.
.
.
x-5=0
x=5
+graph%28+300%2C+300%2C+-10%2C+10%2C+-10%2C+10%2C+%28x%5E2%2B9%29%2F%282x%5E2-9x-5%29%29+