SOLUTION: Determine the value(s) of the variable that must be excluded from the domain. x + 8 _____ x - 4

Algebra ->  Functions -> SOLUTION: Determine the value(s) of the variable that must be excluded from the domain. x + 8 _____ x - 4       Log On


   

Question 425967: Determine the value(s) of the variable that must be excluded from the domain.
x + 8
_____
x - 4

Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
The "domain" are values that can be used for 'x'.
.
In this case, we don't want the denominator to go to zero.
So,
x-4 =0
x = 4
.
Answer:
We must exclude 4 from the domain (because this will make the denominator zero).